Yonder Alonso (born April 8, 1987) is a Cuban former professional baseball first baseman. He played in Major League Baseball (MLB) for the Cincinnati Reds, San Diego Padres, Oakland Athletics, Seattle Mariners, Cleveland Indians, Chicago White Sox and Colorado Rockies. Alonso announced his retirement via Instagram on November 20, 2020.
In 2008, Alonso was drafted for the second time with the seventh overall pick by the Cincinnati Reds. He signed a major-league contract with the Reds worth $4.55 million through 2012.
On December 15, 2018, Alonso was traded to the Chicago White Sox in exchange for minor league outfielder Alex Call.
Alonso made his MLB debut September 1, 2010, for the Cincinnati Reds.

Trophies 
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| Positions Played | MLB | 2019 | H3 |
| Intentional Bases on Balls | MLB | 2019 | 1 |
| Sacrifice Flies | MLB | 2019 | 0 |
| Sacrifice Hits | MLB | 2019 | 0 |
| Times Hit by a Pitch | MLB | 2019 | 1 |
| GIDP | MLB | 2019 | 5 |
| Total Bases | MLB | 2019 | 35 |
| Rbat+ | MLB | 2019 | 99 |
| rOBA | MLB | 2019 | .352 |
| OPS+ | MLB | 2019 | 103 |
| OPS | MLB | 2019 | .837 |
| SLG | MLB | 2019 | .479 |
| OBP | MLB | 2019 | .357 |
| Hits/At Bats | MLB | 2019 | .260 |
| Strikeouts | MLB | 2019 | 17 |
| Bases on Balls/Walks | MLB | 2019 | 10 |
| Caught Stealing | MLB | 2019 | 0 |
| Stolen Bases | MLB | 2019 | 0 |
| Runs Batted In | MLB | 2019 | 10 |
| Home Runs | MLB | 2019 | 3 |
| Triples | MLB | 2019 | 0 |
| Doubles | MLB | 2019 | 7 |
| Hits | MLB | 2019 | 19 |
| Runs Scored | MLB | 2019 | 11 |
| At Bats | MLB | 2019 | 73 |
| Plate Appearances | MLB | 2019 | 84 |
| Games Played | MLB | 2019 | 54 |
| Wins Above Replacement for position players | MLB | 2019 | 0.1 |
|
|
| Positions Played | MLB | 2018 | *3/HD |
| Intentional Bases on Balls | MLB | 2018 | 1 |
| Sacrifice Flies | MLB | 2018 | 5 |
| Sacrifice Hits | MLB | 2018 | 0 |
| Times Hit by a Pitch | MLB | 2018 | 2 |
| GIDP | MLB | 2018 | 10 |
| Total Bases | MLB | 2018 | 217 |
| Rbat+ | MLB | 2018 | 96 |
| rOBA | MLB | 2018 | .323 |
| OPS+ | MLB | 2018 | 98 |
| OPS | MLB | 2018 | .738 |
| SLG | MLB | 2018 | .421 |
| OBP | MLB | 2018 | .317 |
| Hits/At Bats | MLB | 2018 | .250 |
| Strikeouts | MLB | 2018 | 123 |
| Bases on Balls/Walks | MLB | 2018 | 51 |
| Caught Stealing | MLB | 2018 | 0 |
| Stolen Bases | MLB | 2018 | 0 |
| Runs Batted In | MLB | 2018 | 83 |
| Home Runs | MLB | 2018 | 23 |
| Triples | MLB | 2018 | 0 |
| Doubles | MLB | 2018 | 19 |
| Hits | MLB | 2018 | 129 |
| Runs Scored | MLB | 2018 | 64 |
| At Bats | MLB | 2018 | 516 |
| Plate Appearances | MLB | 2018 | 574 |
| Games Played | MLB | 2018 | 145 |
| Wins Above Replacement for position players | MLB | 2018 | 1.5 |
|
|
| Positions Played | MLB | 2017 | 3/H |
| Intentional Bases on Balls | MLB | 2017 | 0 |
| Sacrifice Flies | MLB | 2017 | 0 |
| Sacrifice Hits | MLB | 2017 | 0 |
| Times Hit by a Pitch | MLB | 2017 | 0 |
| GIDP | MLB | 2017 | 3 |
| Total Bases | MLB | 2017 | 58 |
| Rbat+ | MLB | 2017 | 116 |
| rOBA | MLB | 2017 | .346 |
| OPS+ | MLB | 2017 | 116 |
| OPS | MLB | 2017 | .793 |
| SLG | MLB | 2017 | .439 |
| OBP | MLB | 2017 | .353 |
| Hits/At Bats | MLB | 2017 | .265 |
| Strikeouts | MLB | 2017 | 30 |
| Bases on Balls/Walks | MLB | 2017 | 18 |
| Caught Stealing | MLB | 2017 | 0 |
| Stolen Bases | MLB | 2017 | 1 |
| Runs Batted In | MLB | 2017 | 18 |
| Home Runs | MLB | 2017 | 6 |
| Triples | MLB | 2017 | 0 |
| Doubles | MLB | 2017 | 5 |
| Hits | MLB | 2017 | 35 |
| Runs Scored | MLB | 2017 | 20 |
| At Bats | MLB | 2017 | 132 |
| Plate Appearances | MLB | 2017 | 150 |
| Games Played | MLB | 2017 | 42 |
| Wins Above Replacement for position players | MLB | 2017 | 0.4 |
| Positions Played | MLB | 2017 | 3/HD |
| Intentional Bases on Balls | MLB | 2017 | 6 |
| Sacrifice Flies | MLB | 2017 | 0 |
| Sacrifice Hits | MLB | 2017 | 0 |
| Times Hit by a Pitch | MLB | 2017 | 2 |
| GIDP | MLB | 2017 | 6 |
| Total Bases | MLB | 2017 | 168 |
| Rbat+ | MLB | 2017 | 142 |
| rOBA | MLB | 2017 | .381 |
| OPS+ | MLB | 2017 | 141 |
| OPS | MLB | 2017 | .896 |
| SLG | MLB | 2017 | .527 |
| OBP | MLB | 2017 | .369 |
| Hits/At Bats | MLB | 2017 | .266 |
| Strikeouts | MLB | 2017 | 88 |
| Bases on Balls/Walks | MLB | 2017 | 50 |
| Caught Stealing | MLB | 2017 | 0 |
| Stolen Bases | MLB | 2017 | 1 |
| Runs Batted In | MLB | 2017 | 49 |
| Home Runs | MLB | 2017 | 22 |
| Triples | MLB | 2017 | 0 |
| Doubles | MLB | 2017 | 17 |
| Hits | MLB | 2017 | 85 |
| Runs Scored | MLB | 2017 | 52 |
| At Bats | MLB | 2017 | 319 |
| Plate Appearances | MLB | 2017 | 371 |
| Games Played | MLB | 2017 | 100 |
| Wins Above Replacement for position players | MLB | 2017 | 1.8 |
|
|
| Positions Played | MLB | 2016 | *3H/5D |
| Intentional Bases on Balls | MLB | 2016 | 1 |
| Sacrifice Flies | MLB | 2016 | 4 |
| Sacrifice Hits | MLB | 2016 | 0 |
| Times Hit by a Pitch | MLB | 2016 | 1 |
| GIDP | MLB | 2016 | 15 |
| Total Bases | MLB | 2016 | 177 |
| Rbat+ | MLB | 2016 | 88 |
| rOBA | MLB | 2016 | .305 |
| OPS+ | MLB | 2016 | 88 |
| OPS | MLB | 2016 | .683 |
| SLG | MLB | 2016 | .367 |
| OBP | MLB | 2016 | .316 |
| Hits/At Bats | MLB | 2016 | .253 |
| Strikeouts | MLB | 2016 | 74 |
| Bases on Balls/Walks | MLB | 2016 | 45 |
| Caught Stealing | MLB | 2016 | 1 |
| Stolen Bases | MLB | 2016 | 3 |
| Runs Batted In | MLB | 2016 | 56 |
| Home Runs | MLB | 2016 | 7 |
| Triples | MLB | 2016 | 0 |
| Doubles | MLB | 2016 | 34 |
| Hits | MLB | 2016 | 122 |
| Runs Scored | MLB | 2016 | 52 |
| At Bats | MLB | 2016 | 482 |
| Plate Appearances | MLB | 2016 | 532 |
| Games Played | MLB | 2016 | 156 |
| Wins Above Replacement for position players | MLB | 2016 | -0.1 |
|
|
| Positions Played | MLB | 2015 | 3/H5 |
| Intentional Bases on Balls | MLB | 2015 | 3 |
| Sacrifice Flies | MLB | 2015 | 3 |
| Sacrifice Hits | MLB | 2015 | 0 |
| Times Hit by a Pitch | MLB | 2015 | 3 |
| GIDP | MLB | 2015 | 13 |
| Total Bases | MLB | 2015 | 135 |
| Rbat+ | MLB | 2015 | 109 |
| rOBA | MLB | 2015 | .328 |
| OPS+ | MLB | 2015 | 109 |
| OPS | MLB | 2015 | .742 |
| SLG | MLB | 2015 | .381 |
| OBP | MLB | 2015 | .361 |
| Hits/At Bats | MLB | 2015 | .282 |
| Strikeouts | MLB | 2015 | 48 |
| Bases on Balls/Walks | MLB | 2015 | 42 |
| Caught Stealing | MLB | 2015 | 5 |
| Stolen Bases | MLB | 2015 | 2 |
| Runs Batted In | MLB | 2015 | 31 |
| Home Runs | MLB | 2015 | 5 |
| Triples | MLB | 2015 | 1 |
| Doubles | MLB | 2015 | 18 |
| Hits | MLB | 2015 | 100 |
| Runs Scored | MLB | 2015 | 50 |
| At Bats | MLB | 2015 | 354 |
| Plate Appearances | MLB | 2015 | 402 |
| Games Played | MLB | 2015 | 103 |
| Wins Above Replacement for position players | MLB | 2015 | 2.1 |
|
|
| Positions Played | MLB | 2014 | 3/H5 |
| Intentional Bases on Balls | MLB | 2014 | 1 |
| Sacrifice Flies | MLB | 2014 | 3 |
| Sacrifice Hits | MLB | 2014 | 0 |
| Times Hit by a Pitch | MLB | 2014 | 1 |
| GIDP | MLB | 2014 | 8 |
| Total Bases | MLB | 2014 | 106 |
| Rbat+ | MLB | 2014 | 96 |
| rOBA | MLB | 2014 | .310 |
| OPS+ | MLB | 2014 | 96 |
| OPS | MLB | 2014 | .682 |
| SLG | MLB | 2014 | .397 |
| OBP | MLB | 2014 | .285 |
| Hits/At Bats | MLB | 2014 | .240 |
| Strikeouts | MLB | 2014 | 36 |
| Bases on Balls/Walks | MLB | 2014 | 17 |
| Caught Stealing | MLB | 2014 | 1 |
| Stolen Bases | MLB | 2014 | 6 |
| Runs Batted In | MLB | 2014 | 27 |
| Home Runs | MLB | 2014 | 7 |
| Triples | MLB | 2014 | 1 |
| Doubles | MLB | 2014 | 19 |
| Hits | MLB | 2014 | 64 |
| Runs Scored | MLB | 2014 | 27 |
| At Bats | MLB | 2014 | 267 |
| Plate Appearances | MLB | 2014 | 288 |
| Games Played | MLB | 2014 | 84 |
| Wins Above Replacement for position players | MLB | 2014 | 1.3 |
|
|
| Positions Played | MLB | 2013 | 3/H457 |
| Intentional Bases on Balls | MLB | 2013 | 5 |
| Sacrifice Flies | MLB | 2013 | 7 |
| Sacrifice Hits | MLB | 2013 | 0 |
| Times Hit by a Pitch | MLB | 2013 | 2 |
| GIDP | MLB | 2013 | 9 |
| Total Bases | MLB | 2013 | 123 |
| Rbat+ | MLB | 2013 | 100 |
| rOBA | MLB | 2013 | .316 |
| OPS+ | MLB | 2013 | 106 |
| OPS | MLB | 2013 | .710 |
| SLG | MLB | 2013 | .368 |
| OBP | MLB | 2013 | .341 |
| Hits/At Bats | MLB | 2013 | .281 |
| Strikeouts | MLB | 2013 | 47 |
| Bases on Balls/Walks | MLB | 2013 | 32 |
| Caught Stealing | MLB | 2013 | 0 |
| Stolen Bases | MLB | 2013 | 6 |
| Runs Batted In | MLB | 2013 | 45 |
| Home Runs | MLB | 2013 | 6 |
| Triples | MLB | 2013 | 0 |
| Doubles | MLB | 2013 | 11 |
| Hits | MLB | 2013 | 94 |
| Runs Scored | MLB | 2013 | 34 |
| At Bats | MLB | 2013 | 334 |
| Plate Appearances | MLB | 2013 | 375 |
| Games Played | MLB | 2013 | 97 |
| Wins Above Replacement for position players | MLB | 2013 | 0.8 |
|
|
| Positions Played | MLB | 2012 | *3/H |
| Intentional Bases on Balls | MLB | 2012 | 9 |
| Sacrifice Flies | MLB | 2012 | 4 |
| Sacrifice Hits | MLB | 2012 | 1 |
| Times Hit by a Pitch | MLB | 2012 | 3 |
| GIDP | MLB | 2012 | 14 |
| Total Bases | MLB | 2012 | 216 |
| Rbat+ | MLB | 2012 | 111 |
| rOBA | MLB | 2012 | .334 |
| OPS+ | MLB | 2012 | 110 |
| OPS | MLB | 2012 | .741 |
| SLG | MLB | 2012 | .393 |
| OBP | MLB | 2012 | .348 |
| Hits/At Bats | MLB | 2012 | .273 |
| Strikeouts | MLB | 2012 | 101 |
| Bases on Balls/Walks | MLB | 2012 | 62 |
| Caught Stealing | MLB | 2012 | 0 |
| Stolen Bases | MLB | 2012 | 3 |
| Runs Batted In | MLB | 2012 | 62 |
| Home Runs | MLB | 2012 | 9 |
| Triples | MLB | 2012 | 0 |
| Doubles | MLB | 2012 | 39 |
| Hits | MLB | 2012 | 150 |
| Runs Scored | MLB | 2012 | 47 |
| At Bats | MLB | 2012 | 549 |
| Plate Appearances | MLB | 2012 | 619 |
| Games Played | MLB | 2012 | 155 |
| Wins Above Replacement for position players | MLB | 2012 | 1.5 |
|
|
| Positions Played | MLB | 2011 | H/3 |
| Intentional Bases on Balls | MLB | 2011 | 0 |
| Sacrifice Flies | MLB | 2011 | 0 |
| Sacrifice Hits | MLB | 2011 | 0 |
| Times Hit by a Pitch | MLB | 2011 | 0 |
| GIDP | MLB | 2011 | 1 |
| Total Bases | MLB | 2011 | 8 |
| Rbat+ | MLB | 2011 | 10 |
| rOBA | MLB | 2011 | .213 |
| OPS+ | MLB | 2011 | 28 |
| OPS | MLB | 2011 | .483 |
| SLG | MLB | 2011 | .276 |
| OBP | MLB | 2011 | .207 |
| Hits/At Bats | MLB | 2011 | .207 |
| Strikeouts | MLB | 2011 | 10 |
| Bases on Balls/Walks | MLB | 2011 | 0 |
| Caught Stealing | MLB | 2011 | 0 |
| Stolen Bases | MLB | 2011 | 0 |
| Runs Batted In | MLB | 2011 | 3 |
| Home Runs | MLB | 2011 | 0 |
| Triples | MLB | 2011 | 0 |
| Doubles | MLB | 2011 | 2 |
| Hits | MLB | 2011 | 6 |
| Runs Scored | MLB | 2011 | 2 |
| At Bats | MLB | 2011 | 29 |
| Plate Appearances | MLB | 2011 | 29 |
| Games Played | MLB | 2011 | 22 |
| Wins Above Replacement for position players | MLB | 2011 | 0.0 |
|
|
| Positions Played | MLB | 2010 | H/3 |
| Intentional Bases on Balls | MLB | 2010 | 0 |
| Sacrifice Flies | MLB | 2010 | 0 |
| Sacrifice Hits | MLB | 2010 | 0 |
| Times Hit by a Pitch | MLB | 2010 | 0 |
| GIDP | MLB | 2010 | 1 |
| Total Bases | MLB | 2010 | 8 |
| Rbat+ | MLB | 2010 | 10 |
| rOBA | MLB | 2010 | .213 |
| OPS+ | MLB | 2010 | 28 |
| OPS | MLB | 2010 | .483 |
| SLG | MLB | 2010 | .276 |
| OBP | MLB | 2010 | .207 |
| Hits/At Bats | MLB | 2010 | .207 |
| Strikeouts | MLB | 2010 | 10 |
| Bases on Balls/Walks | MLB | 2010 | 0 |
| Caught Stealing | MLB | 2010 | 0 |
| Stolen Bases | MLB | 2010 | 0 |
| Runs Batted In | MLB | 2010 | 3 |
| Home Runs | MLB | 2010 | 0 |
| Triples | MLB | 2010 | 0 |
| Doubles | MLB | 2010 | 2 |
| Hits | MLB | 2010 | 6 |
| Runs Scored | MLB | 2010 | 2 |
| At Bats | MLB | 2010 | 29 |
| Plate Appearances | MLB | 2010 | 29 |
| Games Played | MLB | 2010 | 22 |
| Wins Above Replacement for position players | MLB | 2010 | 0.0 |
|