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Photo: Smiley N. Pool / Houston Chronicle Image 1 of / 13 Caption Close Image 2 of 13 2. Singleton came to the Astros organization in 2011 as part of the mid-season trade that sent Hunter Pence from Houston to Philadelphia. 2. Singleton came to the Astros organization in 2011 as part of the mid-season trade that sent Hunter Pence from Houston to Philadelphia. Photo: Karen Warren / Houston Chronicle Image 3 of 13 3. In his first full season in the Astros organization, Singleton had 21 homers and 79 RBI in 131 games with Class AA Corpus Christi in 2012. 3. In his first full season in the Astros organization, Singleton had 21 homers and 79 RBI in 131 games with Class AA Corpus Christi in 2012. Photo: Kyle Rivas / Getty Images Image 4 of 13 4. Singleton has failed two drug tests while in the minors for marijuana usage. He was suspended 50 games after the second failed test in 2013. 4. Singleton has failed two drug tests while in the minors for marijuana usage. He was suspended 50 games after the second failed test in 2013. Photo: Smiley N. Pool / Houston Chronicle Image 5 of 13 Image 6 of 13 5. In an in-depth interview with the Associated Press during spring training, Singleton said “at this point it’s pretty evident to me that I’m a drug addict.” He went to a rehab center after the second failed test. less 5. In an in-depth interview with the Associated Press during spring training, Singleton said “at this point it’s pretty evident to me that I’m a drug addict.” He went to a rehab center after the second ... more Photo: Smiley N. Pool / Houston Chronicle Image 7 of 13 6. Now that he’s on the Astros’ 40-man roster his drug testing is subject to the program agreed upon between MLB and the players union. He is not subject to testing for drugs of abuse unless “scenarios where there is reasonable cause.” less 6. Now that he’s on the Astros’ 40-man roster his drug testing is subject to the program agreed upon between MLB and the players union. He is not subject to testing for drugs of abuse unless “scenarios ... more Photo: Smiley N. Pool / Houston Chronicle Image 8 of 13 7. Singleton split his time after the suspension in 2013 between Corpus in Class AA and Oklahoma City in Class AAA. He hit only .220 at Oklahoma City in 74 games with six homers. 7. Singleton split his time after the suspension in 2013 between Corpus in Class AA and Oklahoma City in Class AAA. He hit only .220 at Oklahoma City in 74 games with six homers. Photo: Mark Cunningham / Getty Images Image 9 of 13 8. In spring training this year, Singleton didn’t exactly set the world on fire with a .154 batting average but had four homers in 14 games. 8. In spring training this year, Singleton didn’t exactly set the world on fire with a .154 batting average but had four homers in 14 games. Photo: Alex Brandon / Associated Press Image 10 of 13 Image 11 of 13 9. Once at Oklahoma City this year, Singleton has been hot. When he was called up, he had 14 homers in 54 games and a .267 average. 9. Once at Oklahoma City this year, Singleton has been hot. When he was called up, he had 14 homers in 54 games and a .267 average. Photo: Alex Brandon / Associated Press Image 12 of 13 10. Singleton’s contract (five years guaranteed with team options for three more years) is the first long-term deal for a player who has not played in a major league game. 10. Singleton’s contract (five years guaranteed with team options for three more years) is the first long-term deal for a player who has not played in a major league game. Photo: Karen Warren / Houston Chronicle Image 13 of 13 Singleton move a reminder how the Astros won the Pence trade 1 / 13 Back to Gallery

With first baseman Jon Singleton on the way and reportedly locked up for at least five years and hard-throwing righthander Jarred Cosart already an important part of the starting rotation, it’s pretty clear the Astros won the Hunter Pence trade.

The best of the bunch the Astros received, however, may be the kid who hasn’t even reached the majors yet – Class AAA Oklahoma City right fielder Domingo Santana. Furthermore, OKC reliever Josh Zeid has performed well while shuttling between Houston and OKC in the last two seasons. Barring something unforeseen, Santana will make it four major-leaguers in return for Pence.

Less than two months after they picked George Springer from the University of Connecticut, the Astros sent Pence and cash to the Phillies on July 29, 2011, for Cosart, Singleton, Zeid and a player to be named, which ended up being Santana. In spring training, a Phillies official admitted that Santana wasn’t actually supposed to be on the list that was given to the Astros to pick from to satisfy the final piece on Aug. 15, 2011.

Santana, a 6-foot-5, 224-pounder from the Dominican Republic, has usually been one of the youngest players at each minor-league level. He’s 21 now at OKC hitting .292 with nine home runs, 36 RBIs and an .858 OPS over 58 games. It wouldn’t be surprising if he’s up in the majors this year.

Pence has done quite well for himself too, so it was a win-win situation for him and the Astros. The Phillies, however, are now 24-30 for last place in the NL East. They are now at about the same stage that the Astros were in when they sent Pence for the four prospects.