Prospect Roundup: Games of April 29

Rangers 3B Joey Gallo, Double-A Frisco: 2-for-5, 2 2B, RBI, 2 K -- Gallo returned to action last weekend after undergoing surgery on his left ankle and missing Opening Day. He's off to a good start, hitting .333 through five games with four extra-base hits and a stolen base. He's yet to homer, but the round-trippers will come. Gallo has struck out eight times in 21 at-bats after punching out 115 times in 250 at-bats at Double-A last year. He has a track record of steadily improving through his professional career, but the swing-and-miss could be a problem at the Major League level. Time will tell with the 21-year-old.

Astros 2B/OF Tony Kemp, Double-A Corpus Christi: 3-for-5, 2B, 3 RBI, R -- Kemp has primarily played second base as a pro but has also worked in center and left field this season with the Hooks, notably making a potential MiLBY Play of the Year in his first pro appearance in center. Offensively, the Vanderbilt product has a sharp eye and a knack for solid contact. In 19 games, he has 16 walks against 12 strikeouts to go with a .329 average and .811 OPS. Listed at 5-foot-6, Kemp won't ever hit for much power, but the Astros have put faith in undersized second basemen before and been rewarded. If Kemp keeps performing, Houston will have to find a spot for him somewhere.

Marlins RHP Kendry Flores, Double-A Jacksonville: 7 1/3 IP, 3 H, 2 R, 2 ER, HR, 2 BB, 8 K -- Miami acquired the 23-year-old in the Casey McGehee trade this offseason and got a polished hurler with stuff that rates average to a tick above across the board. Flores struck out more than a batter per inning in the California League last year while working consistently in the strike zone. Through four starts with the Suns, Flores has a 3.57 ERA with 17 strikeouts and seven walks in 22 2/3 frames.

White Sox RHP Tyler Danish, Double-A Birmingham: 6 IP, 7 H, R, ER, BB, 6 K -- Danish has all sorts of funk to his delivery, which gives his low-to-mid 90s fastball tons of sink. He's induced a bunch of ground balls in the past, though Double-A hitters haven't had quite as much trouble lifting his pitches as those in the lower Minors. Danish is missing more bats than last year, though, striking out exactly one batter per inning through his first 22 frames in 2015.

Indians OF Bradley Zimmer, Class A Advanced Lynchburg: 3-for-4, 2B, RBI, BB, SB -- Zimmer is hitting .357 with four homers and a 1.038 OPS through 19 games. The 2014 first-rounder (21st overall) is touted as a likely big leaguer whose ceiling could be limited because he's neither a stellar defender nor an elite power threat. The whole might prove greater than the sum of the parts for Zimmer, though. Reports on his defense in pro ball have been promising, though he'll probably be just average in center. If he can stay up the middle while hitting for a high average and average power, Zimmer could be a mainstay in Cleveland's lineup beginning in 2017 or so.

Mariners RHP Edwin Diaz, Class A Advanced Bakersfield: 6 IP, 3 H, BB, 7 K -- The lanky Puerto Rican took a step forward in 2014 and is off to an even better start this year. Through five outings, he has a 1.44 ERA in the hitter-friendly California League. He's struck out 27 over 25 frames and has yet to allow a home run. He's blanked opponents in four of his five outings while getting a ton of ground balls and working largely within the strike zone.

Marlins SS Justin Twine, Class A Greensboro: 2-for-4, 3B, 2B, 2 R -- The 2014 second-rounder has had a rough start to begin his full-season career. After going 2-for-20 in his first five games, Twine landed on the disabled list with a hamstring injury. He returned on April 26 and went 0-for-11 in three games before breaking out with a pair of extra-base hits Wednesday. Twine is a gifted athlete who got a football scholarship offer to Baylor as a quarterback. His arm is his best tool, and he's nimble enough to have a shot to play shortstop long-term. His multi-sport background has left him raw, but he's a promising ball of clay for Miami to try molding into a Major Leaguer.