Arizona Diamondbacks manager Torey Lovullo said he has been told that Ketel Marte traveled back to Phoenix for tests on his left knee, adding that he was a bit surprised at the lack of communication from his All-Star second baseman.
Arizona placed the 32-year-old Marte on the restricted list -- the second time in as many seasons the D-backs have done so -- after he failed to show up for Arizona's loss at Boston on Monday night due to what Lovullo was told to be a personal issue.
Lovullo and the Diamondbacks will finish their series in Boston on Wednesday before returning for a six-game homestand that begins Friday.
Marte's agent, Charisse Espinosa-Dash, told MLB Network on Wednesday that her client is continuing to deal with a personal matter and will have an MRI on his knee in Phoenix on Thursday.
"[Marte] remains optimistic about his recovery and looks forward to returning to the field to contribute to the team as soon as possible," Espinosa-Dash told MLB Network.
Asked if he thought Marte would play for Arizona again this year, Lovullo said he hoped so. A three-time All-Star, Marte is hitting .249 with 21 home runs and 67 RBIs over 118 games this season.
"We need him," Lovullo said before Tuesday's game against the Red Sox. "He's one of the best players in the National League as far as I'm concerned."
Lovullo said he spoke to Marte on Monday trying to find out what was going on without getting any answers. The second baseman traveled with the team to Boston, and Lovullo wasn't certain after Monday night's loss if Marte was still there.
This wasn't the first time Marte had a strange disappearance.
Last season, he went on the restricted list when his home in Arizona was broken into during the All-Star break. He missed three games after flying back to his native Dominican Republic and later apologized for his absence.
The Associated Press contributed to this report.