Urias (back) remains out of the lineup for Wednesday's game versus the Nationals.

Urias hasn't played since exited Sunday's 6-4 loss to the Diamondbacks with lower-back spasms and is considered day-to-day. Max Schuemann will get another start at second base in Urias' stead.

The Rockies recalled Amador from Triple-A Albuquerque on Wednesday.

Amador will join the 26-man active roster as a replacement for Thairo Estrada (hamstring), who was placed on the 10-day injured list. The Rockies will throw Amador into the lineup for Wednesday's series finale versus the Blue Jays, as he'll take over Estrada's usual spot at second base, per Thomas Harding of MLB.com. The 22-year-old could see regular reps at the keystone while Estrada is out, but Amador has managed just a .180/.253/.256 batting line over 148 career plate appearances at the major-league level.

Julien will start at first base and bat eighth in Wednesday's game against the Tigers.

The left-handed-hitting Julien had been slated to sit for the second day in a row against a right-handed starter (Jack Flaherty), but Julien will end up moving back into the starting nine after Trevor Larnach (shoulder) was scratched. Kody Clemens will head to the outfield to fill in for Larnach while Julien covers Clemens' usual post at first base.

The Rockies placed Estrada on the 10-day injured list Wednesday due to a right hamstring strain.

Estrada will head to the IL for the third time this season, after he was previously shut down due to a fractured right wrist and a sprained right thumb. The infielder suffered his latest injury while running out a grounder in Tuesday's 10-4 loss to the Blue Jays and was spotted using crutches to move about the clubhouse after the game, per MLB.com. Colorado recalled Adael Amador from Triple-A Albuquerque in a corresponding move, and he'll replace Estrada in the starting nine at second base in Wednesday's series finale with Toronto, according to Thomas Harding of MLB.com.

Garcia went 3-for-5 with two runs scored and two RBI in Tuesday's loss to the A's.

The second baseman stayed hot and helped fuel a seven-run outburst by the Nats' offense, although that paled in comparison to the 16 runs surrendered by the pitching staff. Over 15 games since the All-Star break, Garcia is slashing .298/.328/.439 with two doubles, two homers, one steal, seven RBI and eight runs.

Koss went 1-for-4 with a two-run home run in Tuesday's 8-1 win over the Pirates.

Koss drew the start at second base for the first time since being reinstated from the injured list Friday. He launched a two-run homer in the third inning, giving the Giants a 2-0 lead. The 27-year-old infielder now has three home runs on the season and is slashing .262/.300/.379 with 14 RBI, 13 runs scored and two stolen bases across 113 plate appearances.

Schneemann is out of the lineup for Wednesday's game against the Mets.

Schneemann and fellow left-handed hitters Kyle Manzardo, Bo Naylor and Nolan Jones will head to the bench for the second time in the series while the Mets send southpaw David Peterson to the hill for the finale. With Schneemann out of the lineup, Angel Martinez and C.J. Kayfus will pick up starts in the outfield alongside left fielder Steven Kwan.

Julien is out of the lineup for Wednesday's game in Detroit.

After getting recalled from Triple-A St. Paul on Friday, Julien started at second base in four straight games and went 2-for-12 with a double and a walk during that stretch. However, with the Twins bringing Luke Keaschall back from the injured list Tuesday, the left-handed-hitting Julien appears to have since faded into a reserve role. Julien will cede second base to Keaschall for a second straight day to close out the series with the Tigers, who have sent right-handed starters to the hill for both of those contests.

McLain is not in the lineup for Wednesday's tilt against the Cubs.

McLain looks to be receiving a routine day off after starting in each of the previous 11 contests. Gavin Lux will get the nod at second base as the Reds try to complete the sweep.

Torres (forearm) will start at second base and bat second in Wednesday's game versus the Twins.

Torres was a late scratch from the lineup ahead of Tuesday's 6-3 loss as he battled some tightness in his left forearm, but he's been cleared to play in Wednesday's series finale. The second baseman enters play Wednesday with two home runs in his first four games this month.