Williamson is not in the lineup for Thursday's game versus the Orioles.

Williamson started at third base in each of the previous 15 contests for the Mariners, but he'll get a breather in Thursday's afternoon tilt. Miles Mastrobuoni will fill in at the hot corner and hit eighth as Seattle tries to avoid the sweep.

Barger is not in the lineup for Thursday's game against the Phillies.

The left-handed-hitting Barger was in the lineup each of the last three times the Blue Jays faced a lefty, but he'll grab a seat Thursday as they go up against southpaw Jesus Luzardo. Ernie Clement will start at third base and George Springer will play right field while Barger exits the lineup.

Vargas is absent from the lineup for Thursday's contest versus the Tigers.

Vargas will get a breather after starting every game since May 13 for the White Sox. Chicago will go with Tim Elko at first base and Josh Rojas at third base in Thursday's series finale.

Rosario went 1-for-3 with a solo home run in Wednesday's win over the Cubs.

The utility infielder broke open a scoreless tie with his third homer of the season, leading off the bottom of the seventh inning by driving the first pitch he saw from Matthew Boyd into the right-field bullpen. Rosario has been limited mainly to a short-side platoon role at third base of late -- Wednesday's start at third base was his first action since May 25 -- but he's hit safely in nine straight games, and since the beginning of May he's churned out a .366/.409/.610 slash line in 44 plate appearances with four doubles, two homers, five runs and 10 RBI. Jose Tena's been productive as well however, and there's no clear path to a bigger workload for Rosario.

Norby went 1-for-4 with a run scored and a stolen base in Wednesday's loss to the Rockies.

It was the 24-year-old infielder's fifth steal of the season but first since May 10, as he was caught stealing on his only two attempts during that time. Norby's 88th percentile sprint speed suggests he could remain a steady contributor in stolen bases if he keeps getting opportunities, but reaching base has been an issue for him -- since the beginning of May he's slashing .248/.282/.381 with two homers, 10 runs and 13 RBI in 29 contests.

Mayer went 0-for-2 with a walk, an RBI and a run scored in Wednesday's 11-9 win over the Angels.

Mayer earned his first career RBI in the majors in an underwhelming fashion: he walked with the bases loaded in the first inning. He was eventually removed from the game against a lefty reliever. Mayer is typically out of the starting lineup against southpaws, but he held his own against them in the minors this season with a .712 OPS. The infield prospect is batting .188 (6-for-32) with three walks, two doubles and three runs scored over his first nine games in the majors.

Collier started at third base and went 1-for-3 with a walk and a double for High-A Dayton on Wednesday.

Collier, who was activated off the 60-day injured list Tuesday, made his season debut Wednesday. His stay with the Dragons is expected to a brief one, per the High-A Dayton website. Collier will soon move on to Double-A Chattanooga, where he had been expected to open the season prior to the thumb injury that landed him on the IL.

Chapman went 1-for-4 with a two-run home run in a 6-5 win against the Padres on Wednesday.

Chapman's lone hit was a big one, as he swatted a two-run homer to left field in the sixth inning to cut a four-run Padres lead in half. The long ball extended the veteran third baseman's on-base streak to seven games, a span in which he's batting .417 (10-for-24) with two homers, three doubles and three RBI. Chapman is batting just .236 on the campaign, but his .791 OPS ranks second on San Francisco, and he's added 11 homers along with five stolen bases through 61 contests.

Vientos was diagnosed with a low-grade strain in his right hamstring Wednesday, Anthony DiComo of MLB.com reports.

Now that the team has determined the severity of Vientos' injury, the plan is for him to rest and receive treatment for 10-14 days before returning to baseball activities. The 25-year-old had been splitting reps between third base and designated hitter before getting injured, and his absence has allowed the Mets to take a closer look at top prospect Ronny Mauricio.

The Athletics optioned Alexander to Triple-A Las Vegas on Wednesday.

Since arriving in the big leagues May 23, Alexander went 3-for-17 with eight strikeouts across six games. His poor performance will now result in him heading back to Triple-A in favor of Max Muncy, who was recalled from Las Vegas in a corresponding move.