Westburg (hand) was spotted fielding grounders while the Orioles were warming up prior to Monday's game against the Red Sox, Jake Rill of MLB.com reports.

Westburg still remains without a clear timeline to return from the 10-day injured list, but the fact that he traveled with the team to Boston and took part in some baseball activities Monday while no longer sporting a cast on his fractured right hand can be taken as a positive sign. The young infielder has been on the shelf since Aug. 1 with the injury, so he'll likely require a rehab assignment at Double-A Bowie or Triple-A Norfolk before he makes his return from the IL.

The Mariners designated Vosler for assignment on Monday.

Vosler will cede his spot on the Mariners' 40-man roster to lefty reliever Austin Kitchen, whom Seattle claimed off waivers from Miami. Before he was optioned to Triple-A Tacoma on Aug. 8, Vosler enjoyed a two-week run in the big leagues with Seattle shortly after the All-Star break, slashing .179/.233/.286 over 10 games. The 31-year-old corner infielder is likely to go unclaimed off waivers.

Rendon is day-to-day with left side back soreness and is out of the lineup for Monday's game against the Twins, Rhett Bollinger of MLB.com reports.

Rendon will take a seat for the second straight game and for the third time over the last five contests while he manages the back issue. Though the Angels haven't suggested that Rendon will require a stint on the 10-day injured list, his track record with injuries suggests nothing is guaranteed. Brandon Drury will occupy third base Monday.

The Yankees placed LeMahieu on the 10-day injured list Monday with a right hip impingement.

The transaction is retroactive to Friday, though LeMahieu hadn't appeared in any games for the Yankees since last Tuesday. The 36-year-old had put together a modest five-game hit streak prior to landing on the IL, but he wasn't in store for meaningful playing time at either of the corner-infield spots with Anthony Rizzo and Jazz Chisholm locked in as starters at first and third base, respectively.

The Yankees reinstated Berti (calf) from the 60-day injured list Monday.

Berti is back with the Yankees for the first time since late May after completing a lengthy recovery from a left calf strain. Prior to being activated, Berti was sent out on an extended rehab assignment, during which he slashed .342/.422/.526 with two home runs and five walks over 12 games. Though Berti looks to be dialed in at the plate, he'll have to settle for a utility role with the Yankees and may not be guaranteed much more than the occasional start against left-handed pitching.

Mayo will start at third base and bat eighth in Monday's game versus the Red Sox, Jake Rill of MLB.com reports.

It's just his third start in eight games since being recalled from Triple-A Norfolk in the wake of the Ramon Urias (ankle) injury, although he did enter as a pinch-hitter each of the last two days. Mayo is only 2-for-25 with 15 strikeouts so far at the major-league level.

Bregman went 1-for-4 with a two-run homer in Sunday's loss to the Diamondbacks.

Bregman got the Astros on the board with a two-run blast off Ryne Nelson in the fourth but was held quiet the rest of the night. The long ball was his first since Aug. 25 and he's now driven in four runs over the last two games after combining for just four RBI total over his previous 15 games. For the year, Bregman is slashing .259/.315/.447 with 22 homers, 65 RBI, 70 runs, three steals and a 38:77 BB:K in 562 plate appearances.

Leblanc went 1-for-4 with a three-run home run in Sunday's 7-4 loss to the Rangers.

Leblanc provided the bulk of the Angels' scoring with his fourth-inning blast off Andrew Heaney. The homer was his second hit in five games with the Angels this season, though the infielder has maintained a decent .254/.379/.437 slash line over 98 games with Triple-A Salt Lake. Leblanc is unlikely to see much more than short-side platoon usage over the final three weeks of the season, and even then, he's not guaranteed to play against every opposing southpaw.

Duran went 1-for-4 with a solo home run and an additional run scored in Sunday's 7-4 win over the Angels.

Duran has hit safely in all five of his games in September, going 7-for-18 (.389) with a homer, five RBI and three doubles in that span. His blast stretched the Rangers' lead to 4-0 in the second inning Sunday. Duran is up to a .256/.295/.336 slash line with three homers, 19 RBI, 24 runs scored, nine doubles and one stolen base over 237 plate appearances this season. Duran has filled a utility role in the infield with the Rangers using a handful of players as replacements for Corey Seager (hip) at shortstop. In September alone, Duran has seen starts at second base, third base, shortstop and in left field.

Rendon is out of the lineup for Sunday's game against the Rangers, Erica Weston of Bally Sports West reports.

Rendon has gone 4-for-27 in his past eight games and will sit for Sunday's series finale in Texas. Michael Stefanic will start at the hot corner and bat seventh in his place.