Boston's Lopez among seven suspended by MLB

Red Sox infield prospect Deiner Lopez was among seven current and free agent Minor Leaguers suspended on Monday by Major League Baseball.
Lopez, 23, was handed a 50-game suspension beginning in 2018 after testing positive for amphetamines while Yankees right-hander Rodrigo Garcia was suspended for 72 games and Oakland second baseman Justin Jones was issued a 56-game ban after both tested positive for performance-enhancing drugs.

Milwaukee right-hander Cristian Sierra received a 72-game suspension for the steroid Boldenone, as did three other free agents: Shortstop Yeison Estevez, outfielder Andres Martinez and right-handed pitcher Adolfo Molina.
The Office of the Commissioner of Baseball said Lopez, Garcia, Jones and Sierra will begin serving their punishments in 2018 while Estevez, Martinez and Molina will have to sit once they sign with a Major League organization.
Lopez hit .249 with five homers, 27 RBIs and a dozen stolen bases in 93 games this past season between Class A Salem and Double-A Portland in the Red Sox system. The switch-hitter, who tested positive for the performance-enhancing substance Clomiphene, signed with Boston out of Venezuela in 2010 and has appeared in 466 career Minor League games.
Garcia, who turned 18 in March, went 2-2 with a 2.25 ERA in 14 relief appearances for the Yankees' Rookie-level Dominican Summer League affiliate. He struck out 17 and walked three in 20 innings after appearing in one game in 2016. He tested positive for Stanozolol and Nandrolone, both performance-enhancing substances.
Jones tested positive for Clomiphene, also a performance-enhancing substance. The 23-year-old third baseman was the Athletics' 34th-round pick in June out of the University of Nevada, Las Vegas and hit .216 with three homers and 11 RBIs in 25 games with the A's Rookie-level Arizona League club this year.
Sierra, 19, signed with the Brewers on July 2 out of the Dominican Republic but has not appeared in a Minor League game. 
The Commissioner's Office has suspended 73 players this year for violations of the Minor League Drug Prevention and Treatment Program.