Koss (hamstring) began his rehab stint in the rookie-level Arizona Complex League on Thursday, and he went 2-for-3 with two runs scored and an RBI in the team's 7-3 win over the ACL Diamondbacks.

Koss played four innings at second base in his first rehab game, tallying two singles. The 27-year-old infielder was placed on the 10-day injured list July 1 due to a left hamstring strain. Before that, Koss had been solid as a reserve infielder for the Giants, slashing .265/.305/.357 with 12 runs scored, 12 RBI, two home runs and two stolen bases across 108 plate appearances.

Estrada went 1-for-4 with a two-run home run in Friday's 6-5 win over the Orioles.

Estrada batted sixth in his return from a thumb sprain and helped spark a comeback with a two-run homer in the fourth inning. Through just 129 plate appearances this season, the 29-year-old is slashing .283/.310/.417 with three home runs, 20 RBI, 12 runs scored and a stolen base.

The Rockies optioned Amador to Triple-A Albuquerque on Friday.

The 22-year-old was called up by Colorado on Sunday and had a productive few days in the majors, going 5-for-9 with two doubles, three RBI and two runs in three games. Despite the demotion Friday, Amador could soon rejoin the big club with Ryan McMahon being traded to the Yankees.

The Rockies reinstated Estrada (thumb) from the 10-day injured list Friday.

The infielder hasn't seen the field since July 7 due to a thumb sprain, but he's ready to rejoin Colorado for Friday's series opener in Baltimore. Estrada has a .284/.312/.397 slash line with two homers in 29 games this season and should reclaim the starting job at second base now that he's healthy.

Donovan went 3-for-5 with a three-run homer and an additional run scored in Thursday's 9-7 win against San Diego.

The second baseman put St. Louis up 4-2 in the second inning with a three-run homer, which was the Cardinals' second three-run blast in the frame. It was Donovan's ninth home run of the season, and he's now batting .300 (21-for-70) with three doubles, three homers, 11 RBI and nine runs through 18 games in July.

Iglesias is not in the lineup for Thursday's tilt in St. Louis.

After starting four consecutive games (two against lefties, two against righties), Iglesias has now been absent from the lineup for two straight contests. The Padres will roll out Jake Cronenworth at second base in Thursday's series opener.

Marte went 2-for-5 with a solo home run and an additional run scored in Wednesday's 4-3 loss to the Astros.

Marte led off the bottom of the first with a 420-foot blast off Brandon Walter, his 20th homer of the season and first since July 3. Marte, who returned to the lineup Tuesday after missing Arizona's previous three games due to a personal matter, had gone just 10-for-47 (.213) through his first 13 games in July. Overall, the second baseman is slashing .287/.389/.566 with 41 RBI, 55 runs scored and a pair of stolen bases across 311 plate appearances this year.

Gorman received a pain-killing injection in his injured back Monday, MLB.com reports.

Gorman first injured his back prior to the All-Star break and then landed on the 10-day injured list Saturday after he didn't progress as hoped. He will be eligible for activation next week, but the Cardinals will wait to see how Gorman responds to the injection before a timetable for his return comes into focus.

Estrada (thumb) was spotted taking batting practice prior to the Rockies' game Wednesday against the Cardinals, Kevin Henry of The Denver Gazette reports.

Estrada was placed on the 10-day injured list last Friday due to a right thumb sprain, but because his IL stint was retroactive to a week before that date, he'll be eligible for activation at any time. His ability to take BP on Wednesday suggests a return isn't far away, but Estrada may not be cleared to play during this weekend's series in Baltimore if the Rockies decide he needs to head out on a brief rehab assignment beforehand.

McNeil is out of the lineup for Wednesday's game against the Angels.

The Angels are having a left-hander (Brock Burke) open the contest, and lefty Jake Eder is a candidate to cover multiple innings in relief, so the left-handed-hitting McNeil will be held out of the lineup for the day game. With McNeil on the bench, Tyrone Taylor will pick up a start in center field.