Rockies’ David Dahl opts to have spleen removed for quicker return
by Michael Hurcomb | CBSSports.com

(11:59 am ET) Rockies outfield prospect David Dahl, who was involved in a violent on-field collision Thursday while playing for Double-A New Britain, has elected to have his spleen removed, his agents announced on Twitter on Sunday night. Dahl had surgery last week to repair a lacerated spleen.

His agents at Sosnick Cobbe & Karon said having his spleen removed will allow him to return this season instead of next year. However, they also mentioned “it brings other challenges” as well.

Dahl was hurt in Thursday’s game when he was chasing down a fly ball in center field. Shortstop Trevor Story and second baseman Juan Ciriaco also went after the play, but while Story pulled up, Ciriaco did not. He struck Dahl in the head and torso area with his knee, per MiLB.com. Dahl stayed on the ground following the collision, but walked off under his own power.

The 2012 first-round pick is considered a top-100 prospect by Baseball America (No. 22) and MLB.com (No. 59).

Orioles’ J.J. Hardy yet to hit stride offensively
by R.J. White | CBSSports.com

(11:57 am ET) Orioles shortstop J.J. Hardy went 1 for 5 in Sunday’s 9-5 loss to the Rays to finish May with a .190/.209/.274 line along with two home runs and six RBI in 84 at-bats.

Hardy didn’t make his season debut until May 7 due to a shoulder strain and he wasn’t able to hit the ground running in May, homering twice in his first eight games but closing out the month with an average under .200. He hit .268/.309/.372 with nine home runs and 52 RBI in 529 at-bats in 2014.

White Sox’s Alexei Ramirez closes May on 1-for-22 skid
by R.J. White | CBSSports.com

(11:48 am ET) White Sox shortstop Alexei Ramirez went 0 for 4 on Sunday to close May in a 1-for-22 slump over his last six games.

Ramirez had managed to somewhat recover from a slow start to the season to hit .337 from May 9 through May 23, but he’s been back on a cold streak over the last week, ending May with a .227/.246/.320 line along with two home runs, 21 RBI and six stolen bases in 181 at-bats.

Pirates 1B/OF Corey Hart has not made start since May 16
by Michael Hurcomb | CBSSports.com

(11:48 am ET) Pirates reserve outfielder/first baseman Corey Hart has not made a start since May 16 against the Cubs, which is a span of 13 games. He has started just seven times this season, with five of those starts coming when a left-hander has been on the hill.

Hart is batting .286 with one home run and six RBI in 19 games against right-handed pitchers, while he is batting .111 with one double and one RBI in 11 games against lefties.

Padres SS Clint Barmes totals season-best three hits
by Michael Hurcomb | CBSSports.com

(11:43 am ET) Padres shortstop Clint Barmes totaled a season-best three hits — all singles — and one RBI during a 7-1 win Sunday against the Padres. He also had one strikeout and one run.

Barmes made just his 14th start of the season Sunday. Of his 14 starts, 12 have come when a left-hander has started for the opposition.

He is batting .333 with one home run, two doubles, two RBI and seven runs in 12 starts against lefties in 2015.

Twins’ Danny Santana still looking for first homer of 2015
by R.J. White | CBSSports.com

(11:43 am ET) Twins shortstop Danny Santana went hitless in three at-bats in Sunday’s 6-5 win over the Blue Jays and closes May without hitting a single home run in 2015.

Santana owns just a .549 OPS on the season but has been particularly brutal in recent weeks, hitting .141/.167/.219 in 64 at-bats over his last 19 games, a stretch that featured no multihit efforts by the shortstop. Despite his offensive shortcomings, the Twins went 20-7 in May to seize first place in the AL Central.

Astros’ Carlos Correa slowing down in Triple-A
by R.J. White | CBSSports.com

(11:37 am ET) Astros shortstop prospect Carlos Correa went 1 for 3 with a triple in Sunday’s game with Triple-A Fresno but is just 2 for 19 in his last five games.

Correa dominated the Double-A level earlier this year, posting a 1.185 OPS in 117 at-bats and earning a promotion to Triple-A. After a solid start at the new level, the elite prospect has struggled a bit, and he now owns a .241/.307/.430 line with three home runs, eight RBI and three stolen bases in 79 at-bats with Fresno.

Padres SP Casey Kelly does well in first start in minors
by Michael Hurcomb | CBSSports.com

(11:37 am ET) Padres pitcher Casey Kelly made his first start of the season in an appearance for Double-A San Antonio on Thursday. The right-hander, who underwent Tommy John surgery in 2013, allowed two hits and no walks, while striking out one in four scoreless innings.

Kelly has mostly pitched in relief this season. In 15 outings, including one for Triple-A El Paso, he is 1-3 with a 3.13 ERA, 1.26 WHIP and one save. He also has 18 strikeouts and nine walks in 23 innings.

Yankees’ Chase Headley picks up offense in May
by R.J. White | CBSSports.com

(11:27 am ET) Yankees third baseman Chase Headley went 1 for 4 in Sunday’s 3-0 loss to the A’s to close May with a .275/.327/.412 line in 102 at-bats.

Headley entered May with a .232/.284/.390 line but was able to increase his production over the last month. He hit second Sunday for the fifth straight game and the 10th time overall this season, and he’s managed a .317/.364/.439 line while batting second.

Padres OF Melvin Upton up to 29 at-bats on rehab assignment
by Michael Hurcomb | CBSSports.com

(11:25 am ET) Padres outfielder Melvin Upton is getting closer to the magic number of 40 at-bats on his rehab assignment with Triple-A El Paso. 

Upton, who is expected to at least get 40-50 at-bats on his rehab assignment, has managed 29 at-bats in his first eight games. He is batting .241 (7 for 29) with two doubles, two RBI, two walks, seven runs, nine strikeouts and two stolen bases.