BALTIMORE -- After their game against the New York Yankees was postponed because of rain on Tuesday, the Orioles had a chance to further assess two injuries that could hamper the left side of the infield.

Third baseman Manny Machado suffered a sprained ligament in his right knee after hitting a broken-bat grounder in the third inning against the Yankees on Monday. Baltimore shortstop J.J Hardy has missed the past two games with a sprained left thumb and was still being evaluated.

The Orioles will update Machado's condition on Wednesday.

Before the diagnosis, manager Buck Sholwater expressed some optimism the knee was not as badly injured as previously thought. Machado already missed the first month of the season while recovering from surgery on his left knee.

"(Machado) was optimistic last night," Showalter said. "Fortunately, he's had a little experience with it."

Tuesday's rainout game will be made up Sept. 12 as part of a doubleheader.

Both teams have an off day on Thursday and the rainout gave Hardy an extra day to rest.

Showalter also expressed some optimism with Hardy. He also underwent an MRI as a safety precaution to make sure there is no major damage.

"J.J. feels a tad better today and that is a good sign, but I'll feel better when we get through with the MRI," Showalter said.

NOTES: Yankees RHP Michael Pineda (2-2, 1.83 ERA) will come off the DL and start Wednesday against the Orioles. ... Baltimore RHP Chris Tillman (9-5, 3.73 ERA) will make the start for the Orioles. Wei-Yin Chen (12-4, 3.90 ERA), who was scheduled to start Tuesday, has been pushed back to Friday... Baltimore RHP Miguel Gonzalez was expected to make his scheduled start Wednesday for Triple-A Norfolk. However, he will be limited to three innings in case the Orioles decide to bring him back up.