The Chicago Cubs have placed closer Craig Kimbrel on the 10-day injured list with right knee inflammation, and All-Star catcher Willson Contreras will miss the next four weeks with a right hamstring strain.

The injuries are two significant blows for the NL Central-leading Cubs, who are trying to hold off St. Louis and Milwaukee to win the division for the third time in four years.

Kimbrel says his knee started bothering him while he was closing out Saturday's 4-1 victory over the Brewers. The IL stint is retroactive to Sunday, and Kimbrel thinks he will be ready when he is eligible to return.

Contreras also got hurt Saturday. He had an MRI on Monday that showed a Grade 2 strain. He experienced a similar injury in 2017.

The Cubs recalled right-hander Duane Underwood Jr. before their series opener against Oakland. They also announced reliever Brad Brach cleared waivers and was released.

Mets' Cano back on IL

New York Mets second baseman Robinson Cano is back on the injured list, this time with a torn left hamstring. Cano was placed on the IL on Monday, a day after he got hurt while rounding first base during a game at Pittsburgh.

Mets officials said an exam determined surgery is not necessary but did not give a timetable for Cano's return.

In his first season with the Mets after being acquired from Seattle, the 36-year-old was limited to one game between May 22 and June 16 because of a strained left quadriceps.

Back trouble for Martinez

Red Sox slugger J.D. Martinez has been scratched from Monday night's lineup due to back tightness. Boston manager Alex Cora told the media about two hours before the Red Sox were slated to host the Kansas City Royals at Fenway Park.

"It's been acting up, a little bit tight," Cora said. "This morning he felt it, got treatment, so we're going to stay away from him."
With Martinez, the club's usual cleanup hitter out, Christian Vazquez was moved into the DH spot to bat sixth. Andrew Benintendi was slotted fourth in the order.

Another Rays pitcher out

Yonny Chirinos has become the third Tampa Bay Rays starting pitcher on the injured list.
The right-hander was placed on the 10-day IL Monday with right middle finger inflammation and is expected to miss at least a month.

AL Cy Young Award winner Blake Snell has been out since July 22 with bone chips in his left elbow that required surgery. Tyler Glasnow started the season 6-1 before being sidelined May 10 due to a right forearm strain.

Tampa Bay manager Kevin Cash said the team "is processing" how to handle the injuries.

"Certainly, when we've got three guys that we count on for 180-plus innings and they're all sitting and watching games, not ideal," Cash said. "But bet on these guys to pick each other and find a way to figure it out."