CHICAGO -- A's rookie Matt Chapman remained in the hospital Friday with a left knee infection but has made "significant progress," according to manager Bob Melvin.
Melvin, whose club began a three-game series against the White Sox on Friday, said Chapman could potentially be released Saturday. The A's placed him on the 10-day disabled list Thursday, retroactive to Monday, and he's expected to return when eligible June 29.
"He's better today and making some progress," Melvin said. "He'll stay in there tonight, for sure, and hopefully out tomorrow."
The scare arrived just four days into Chapman's Major League career. The third baseman, who is the A's No. 4 prospect according to MLBPipeline.com, joined the club from Triple-A Nashville on Thursday for his big league debut, going 3-for-14 with three RBIs in four games against the Yankees.
Worth noting
• Right-hander Chris Bassitt (Tommy John surgery) is slated to throw a simulated game with Class A Advanced Stockton on Saturday.
• Shortstop Marcus Semien (right wrist surgery) went 1-for-3 with a double in his first rehab start for Stockton, playing six innings at shortstop on Friday. Semien flew out and struck out in his other two at-bats.