Chapman went 1-for-3 in Monday's 4-1 loss to the Padres.

Chapman singled on a groundball in the seventh inning, marking the second time this month he's recorded hits in back-to-back games. The third baseman has struggled in August, slashing .176/.293/.206 with four runs scored, two RBI and a double in 41 plate appearances. Overall, he's now slashing .231/.338/.427 with 53 runs scored, 44 RBI, 16 home runs and seven stolen bases across 399 plate appearances.

DeJong went 2-for-4 with a walk and a two-run home run in Monday's loss to the Royals.

Getting the start at third base, DeJong took Daniel Lynch deep in the fifth inning to provide the Nationals with their final offense of the night. DeJong has three straight multi-hit performances, with the prior two starts coming at second base while Luis Garcia was dealing with back tightness. Garcia returned to the starting nine Monday, but interim manager Miguel Cairo will be motivated to keep DeJong in the lineup given his hot bat -- over 40 plate appearances since the All-Star break, the veteran utility infielder is slashing .333/.375/.639 with two doubles, three homers, two steals and seven RBI.

Caminero went 3-for-4 with a solo home run, an additional run scored and a walk Monday in a 7-4 win over the Athletics.

Caminero scored the first run of the game following a second-inning infield single, and he then plated himself with a big 419-foot blast in the seventh frame. The talented young third baseman has been on a power binge of late, going deep five times over his past five games. Caminero has tacked on eight RBI in that span, pushing him up to 81 runs batted in -- fifth-most in the American League -- on the campaign.

Bregman went 2-for-4 with a two-run home run in Monday's 7-6 loss against Houston.

Bregman got things started early against his former team, launching a two-run homer into the Crawford Boxes in the top of the first inning. The third baseman has put together an excellent first season in Boston, posting a .923 OPS with 22 doubles, 15 homers and 48 RBI through 74 games.

Muncy went 1-for-3 with a three-run home run and a walk in a loss to the Angels on Monday.

The Dodgers trailed 7-0 at one point in the contest, but Muncy at least made a game of it when he clubbed a three-run homer in the eighth inning. The powerful third baseman hasn't missed a beat since returning from an extended absence caused by a knee injury -- in seven contests since being activated off the IL, Muncy is batting .421 (8-for-19) with four long balls and nine RBI along with a 7:2 BB:K. Muncy didn't hit a homer until his 29th game of the season, but since then he's gone deep 17 times over 60 contests.

Mayer (wrist) is scheduled to play catch Monday, Christopher Smith of MassLive.com reports.

Mayer has been on the 10-day injured list since July 24 due to a sprained right wrist. He was recovering from the injury slower than expected, even after receiving an anti-inflammatory injection for his wrist Aug. 2, but he has progressed enough to start baseball activities. How Mayer's wrist responds to increased work will determine his timeline for a return to the majors this season.

Cabrera (ankle) said Monday that there's a "small window" for him to return this season, but it remains an unlikely proposition, Gary Phillips of the New York Daily News reports.

Cabrera underwent surgery in mid-May to repair a fracture and ligament damage in his left ankle. He has been walking around lately without the aid of a scooter or boot, but he cannot jog yet or perform baseball activities. Even if the Yankees manage to make a postseason run, it's likely Cabrera will be held out until next season.

Vargas (oblique) took batting practice Monday, Scott Merkin of MLB.com reports.

Vargas relayed after the workout that he didn't feel hindered by his left oblique strain and said that he hopes to be activated from the 10-day injured list without going on a rehab assignment first. That decision will be up to the White Sox, but the team could grant Vargas' request since the 25-year-old has missed just over a week of action thus far. If Vargas does bypass a rehab assignment, he could return for this weekend's series in Kansas City.

House is not in the lineup for Monday's game in Kansas City.

House was demoted to the No. 8 spot in the batting order for the previous two contests and will be out of the lineup altogether Monday. The rookie infielder is slashing only .213/.219/.246 with a 19:1 K:BB so far in the second half. Paul DeJong will hold down third base for the Nationals on Monday.

Karros will start at third base and bat seventh in Monday's game in St. Louis.

After being called up from Triple-A Albuquerque on Friday, Karros started at third base in all three games of the Rockies' weekend series in Arizona, going 4-for-11 with two doubles, two walks, three RBI and two runs. The 23-year-old will stick in the starting nine Monday and should have a chance to settle in as the Rockies' everyday option at the hot corner for the rest of the season if he can remain reasonably productive at the plate.