Gelof successfully underwent surgery on his left shoulder Wednesday, Jason Burke of SI.com reports.

EDGE Analysis

Gelof dislocated his left shoulder while diving for a grounder in the fifth inning of Friday's game against the Pirates. Now that he's undergone surgery, Gelof will turn his attention towards being ready for the start of spring training. He appeared in 30 games for the Athletics this season and finished with a .174/.230/.272 slash line with one steal, 12 runs, two homers and seven RBI in 101 plate appearances.

Gelof was placed on the 10-day injured list Saturday with a dislocated left shoulder.

EDGE Analysis

It was already reported that Gelof was done for the season after suffering the injury in Friday's game against the Pirates. Max Muncy (hand) was activated from the injured list in a corresponding move and should play regularly in place of Gelof down the stretch.

Gelof dislocated his left shoulder during Friday's game against Pittsburgh, Martin Gallegos of MLB.com reports.

EDGE Analysis

Gelof suffered the injury while diving for a grounder in the fifth inning of Friday's contest, and he will ultimately have to miss the rest of the season. He'll close the book on 2025 with a forgettable .174/.230/.272 slash line to go with two homers, seven RBI, 12 runs scored and a steal through 101 plate appearances in the majors.

Gelof was removed from Friday's game against the Pirates with a left shoulder injury, Martin Gallegos of MLB.com reports.

EDGE Analysis

Gelof appeared to be holding his wrist after making a diving play on a groundball in the fifth inning, but the issue has now been revealed to be in his shoulder. He was immediately replaced at second base following the incident and will presumably head in for imaging to determine the severity of his injury. Fantasy managers can consider him day-to-day until the team provides more details about the second baseman's status.

Gelof is out of the lineup for Wednesday's game against the Red Sox.

EDGE Analysis

The right-handed-hitting Gelof finds himself on the bench for the third game in a row, this time sitting against a right-hander (Lucas Giolito) after his prior two absences from the lineup came versus lefty starters. The Athletics had been deploying Gelof as their everyday second baseman following his call-up from Triple-A Las Vegas on Aug. 25, but he's slashed a disappointing .230/.277/.377 with a 43.9 percent strikeout rate since that time. He appears to have moved into a reserve role while the Athletics have turned to Darell Hernaiz at second base and Brett Harris at third.

Gelof is not in the lineup for Tuesday's game in Boston.

EDGE Analysis

It's the second straight game that Gelof has been absent from the lineup after he had started 17 straight contests. Darell Hernaiz will cover second base for the Athletics.

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

EDGE Analysis

Darell Hernaiz will slide over from his usual post at third base to cover the keystone in place of Gelof, who had started in every game since being called up from Triple-A Las Vegas on Aug. 25. In the three weeks following his promotion, Gelof is hitting .230 with two home runs, one steal, eight runs and six RBI while striking out at a 43.9 percent clip over 17 games.

Gelof went 2-for-3 with a walk and a stolen base in Tuesday's 6-0 loss to the Red Sox.

EDGE Analysis

The steal was Gelof's first of the season. The second baseman has hit .300 (9-for-30) to begin September, but he's also racked up 12 strikeouts over eight games in that time. For the season, he's batting .195 with a .553 OPS, two home runs, seven RBI and 11 runs scored across 83 plate appearances.

Gelof went 3-for-5 with a double, a solo home run, an additional run scored and was caught stealing in Monday's win over the Cardinals.

EDGE Analysis

Gelof contributed to the Athletics' blowout win Monday with his second homer and second double of the season. His 2025 campaign has been derailed by wrist and rib injuries, keeping him in the minors more than the majors to this point. Since being recalled from Triple-A Las Vegas on Aug. 25, the 25-year-old is 7-for-27 (.259), with all four of his extra-base hits and five of his six RBI on the year coming during the seven-game stretch.

Gelof went 2-for-4 with a home run, a double and four total RBI In a 7-0 victory versus the Tigers on Wednesday.

EDGE Analysis

Gelof crushed a two-run homer in the second inning and added a two-run double in the eighth. Those were his first hits since he returned to the majors Aug. 25 following a lengthy stint with Triple-A Las Vegas. Gelof has started at second base in each of the A's three games since his promotion and now appears to be the primary option there, while Darell Hernaiz has been moving around between third base and shortstop.