Polanco (knee) will start at second base and bat cleanup in Monday's game against the Red Sox.

Polanco was lifted late in Sunday's 6-3 win over the White Sox with knee pain, but he apparently won't require a day out of the lineup -- or even a day out of the field -- to shake off the injury. The Mariners will hope that the knee issue won't disrupt Polanco's timing at the plate, as he's been one of the club's most productive hitters thus far in the second. Over his nine games since the All-Star break, Polanco is slashing .286/.342/.686 with four home runs and a stolen base.

The Rangers optioned Foscue to Triple-A Round Rock on Monday.

Foscue had already been withheld from the lineup in each of the Rangers' last four matchups against right-handed pitching, and his outlook for playing time was only going to worsen with Josh Jung (wrist) returning from the 60-day injured list Monday. As a result, Texas will send the 25-year-old back to Triple-A to receive everyday at-bats. Foscue struggled to produce at the plate during his week-long stint with the big club, going 1-for-17 with a double and seven strikeouts over his five starts as Texas' designated hitter.

Westbrook is out of the lineup for Monday's game against the Mariners, Jen McCaffrey of The Athletic reports.

Westbrook had occupied the keystone in seven of the Red Sox's last eight games, but his surge in playing time was mostly fueled by Boston facing a schedule that was heavy on left-handed pitching. The 29-year-old still looks to be stuck in the short side of a platoon at second base with David Hamilton, who will cover the position Monday while the Mariners send right-hander Logan Gilbert to the bump.

Norby is not in the lineup for the first game of Monday's doubleheader versus the Blue Jays, Rich Dubroff of BaltimoreBaseball.com reports.

The Orioles will go with Jordan Westburg at second base and Ramon Urias at third in the first game of the twin bill. Norby is likely to find his name on the lineup card for Monday's nightcap.

Castro went 3-for-4 with a walk and two runs scored Sunday against the Tigers.

Castro entered Sunday's contest mired in a 7-for-45 slump but broke out to help spark the Twins offense during their 5-0 win. His slash line now stands at .263/.353/.411 with 24 doubles, five triples, seven homers, 34 RBI, 60 runs and 10 steals in 17 attempts over 425 plate appearances.

Polanco left Sunday's 6-3 win over the White Sox in the bottom of the seventh inning as a result of knee pain, Daniel Kramer of MLB.com reports.

Polanco has been dealing with the knee injury for a while according to manager Scott Servais, but the issue isn't considered to be injured-list worthy. The infielder was also removed partially due to Seattle owning a 6-1 lead entering the bottom of the seventh. Polanco can be considered day-to-day heading into Monday's series opener on the road in Boston.

Gelof is out of the lineup for Sunday's game against the Angels.

Gelof has a .579 OPS and 32.1 percent strikeout rate over 73 at-bats in July and will sit Sunday for the second consecutive game. Abraham Toro will receive another start at second base Sunday, while Tyler Nevin makes a start at third.

Frazier is not in the starting lineup for Sunday's series finale against the Cubs.

Frazier is slashing just .146/.205/.220 with one home run, five RBI and a 22.2 percent strikeout rate across 43 plate appearances in July. Salvador Perez will serve as the designated hitter Sunday and bat in the cleanup spot against Cubs right-hander Javier Assad.

Polanco went 3-for-5 with two home runs and three RBI in Saturday's 6-3 win over the White Sox.

Polanco hit solo shots in the fourth and fifth innings before tacking on an RBI single in the eighth. Hitting in Chicago has agreed with the second baseman -- he has three long balls over two games versus the White Sox, giving him nine on the year. He's added a .209/.293/.340 slash line, 24 RBI, 24 runs scored, two stolen bases and five doubles over 273 plate appearances.

Keith went 2-for-4 with a home run, a triple and three RBI in Saturday's 7-2 win over the Twins.

Keith was retired in his first two at-bats Saturday, but then he tripled and homered in the sixth and seventh innings, respectively. Seven of his 11 home runs this season have come in the month of July, as he's found a home at the top of the Tigers' lineup. Keith is hitting .347 in July and has raised his slash line to .259/.317/.411 this season.