Acuna will start at second base and bat eighth in Wednesday's game against the Pirates.

After sitting against Pirates righty Mitch Keller on Tuesday, the right-handed-hitting Acuna is back in the lineup Wednesday while Pittsburgh sends a lefty (Bailey Falter) to the bump. Before he was out of the lineup Tuesday, Acuna had started in each of the previous five games, but his playing time could become more sporadic with his bat having cooled down of late. Acuna has gone 4-for-20 with no walks and five strikeouts over his last five starts.

The Pirates claimed Helman off waivers from the Cardinals on Wednesday.

Helman will be assigned to Triple-A Indianapolis. The utility player has slashed only .185/.260/.292 over 18 games with Triple-A Memphis this season.

Farmer will start at shortstop and bat second in Wednesday's game against the Rangers.

Back in the lineup Wednesday for just the second time in five games, Farmer will occupy a prominent spot in the batting order while typical No. 2 hitter Jordan Beck slides down to the three hole. Farmer has produced a meager .601 OPS over 117 plate appearances on the season, so barring a big performance Wednesday, he's unlikely to see regular opportunities in a premium spot in the lineup.

Amador is out of the lineup for Wednesday's game against the Rangers.

Amador has been seeing most of the starts at second base for the Rockies of late, but he's yet to completely run away with a full-time job, batting just .158 with a 28.1 percent strikeout rate since being promoted from Triple-A Albuquerque in mid-April. Owen Miller will get the nod at the keystone Wednesday.

Baty went 2-for-3 with a solo home run in Tuesday's 2-1 win over the Pirates.

Getting the start at second base and batting eighth, Baty broke a 1-1 tie in the seventh inning when he drove a Mitch Keller changeup just over the fence in left field. Baty has been getting consistent playing time against right-handed pitching since returning to the majors earlier this month, and he's rewarded the Mets' confidence in him by going 6-for-17 (.353) with four homers and seven RBI over the last six games. The team isn't using Baty and Mark Vientos in a strict platoon at third base, but instead both players have been in the lineup in three of the last four games with Vientos getting two nods at DH. That arrangement will likely continue as long as both young hitters are swinging hot bats.

Frazier went 1-for-3 with two walks, a double and a stolen base Tuesday against the Mets.

Frazier remains the Pirates' primary second baseman with Nick Gonzales (ankle) sidelined, but he got the chance to lead off for the first time since April 5. Frazier only got that chance because Oneil Cruz (back) is sidelined, but he took advantage with a respectable stat line and his first stolen base since April 23. Despite the well-rounded night, he has gone just 5-for-25 with one run scored and one RBI in his last 10 games.

Tawa went 3-for-4 in Tuesday's 10-6 loss to the Giants.

The utility player got a start in center field Tuesday, but Tawa's playing time is set to drop with Jordan Lawlar coming up from Triple-A Reno to fill a utility role in the infield. Tawa's also got some versatility, but he'll have fewer opportunities to make an impact. He's batting .224 over 26 games, though he has added a .762 OPS, five home runs, 11 RBI, 11 runs scored and four stolen bases across 89 plate appearances.

Koss went 2-for-4 with a grand slam in Tuesday's 10-6 win over the Diamondbacks.

The Giants fell behind early, but they never looked back after Koss put them ahead with a second-inning grand slam. The infielder has gone 6-for-17 (.353 average) over his last six games, adding six RBI in that span. Overall, he's batting .241 with one home run, seven RBI, six runs scored and no stolen bases over 59 plate appearances on the season. He had nine long balls over 88 minor-league games across three levels last season, so don't expect a lot of power out of Koss. With both Tyler Fitzgerald (rib) and Casey Schmitt (oblique) on rehab assignments, Koss's time as an mainstay in the middle infield for San Francisco could soon come to an end.

Fitzgerald (rib) started at second base and went 1-for-3 with a run scored in Triple-A Sacramento's 5-3 win over Salt Lake on Tuesday.

Fitzgerald began his rehab assignment with Sacramento after being placed on the 10-day IL on May 1 due to a left rib fracture. The 27-year-old infielder hit leadoff and singled in the first inning before coming around to score. Barring any setbacks during his rehab assignment, Fitzgerald could return to the Giants later this week. He has played in 25 games in the majors this season, slashing .284/.341/.432 with 14 runs scored, seven RBI and five stolen bases across 90 plate appearances.

Kim is not in the Dodgers' starting lineup against the Athletics on Tuesday, David Vassegh of AM 570 LA Sports reports.

With Kim beginning Tuesday's contest on the bench, Miguel Rojas will start at second base and bat eighth against Athletics southpaw Jeffrey Springs. Kim was recalled by the Dodgers on May 3 after Tommy Edman (ankle) was placed on the 10-day IL, and Kim has gone 7-for-22 with two stolen bases, four runs scored and two RBI in nine major-league games.