The New York Yankees' injury woes deepened on Monday as the team confirmed that outfielder Cody Bellinger will be sidelined for four to six weeks with a Grade 2 left hamstring strain. The diagnosis came after additional testing in New York, following the 31-year-old's early exit from Saturday's game against the Philadelphia Phillies.

Bellinger felt tightness in his hamstring while rounding first base on an eighth-inning double during the Yankees' 3-1 victory. He was placed on the 10-day injured list Sunday, and the subsequent MRI results revealed the extent of the damage. Manager Aaron Boone, speaking before the opener of a four-game series against the Chicago White Sox, struck a cautiously optimistic tone. "So the good thing is he's obviously able to move around right now," Boone said. "We'll continue to do that and just allow this thing to heal and get him right."

The loss of Bellinger is a significant blow to a Yankees lineup already stretched thin. Reigning AL MVP Aaron Judge has been out since May 31 with a fractured rib, and designated hitter Giancarlo Stanton has been sidelined since April 24 due to a strained right calf. Both players are traveling with the team in Chicago, and Boone noted that Stanton is progressing with his running routine. "The strength stuff, explosive stuff he's doing in the weight room has been very good," Boone added. "We just got to get him up to a level obviously on the running side of things to be able to go out there."

Heading into Monday's games, the Yankees trailed the AL East-leading Tampa Bay Rays by three games. Boone acknowledged the challenge but refused to use injuries as an excuse. "We've had some tough injuries to some really important people," he said. "But again, that is part of it. As I say, the season waits for no one."

To fill the gap in the outfield, the Yankees promoted Spencer Jones from Triple-A Scranton/Wilkes-Barre. Max Schuemann started in left field for the series opener against the White Sox, with Jones in center and Jasson Dominguez in right. The trade deadline is just over a week away, but Boone downplayed the idea that Bellinger's injury would drastically alter the front office's strategy. "I get the sense that they have been working on this in different ways, shape and form for the last several weeks, getting ready for trade deadline stuff," Boone said. "I expect them to try and do all they can to improve our team, but again, you never know how that's going to shake out."

Bellinger, who re-signed with the Yankees last winter on a five-year, $162.5 million contract, was enjoying a solid season. Through 102 games, he is batting .259 with 11 home runs and 53 RBIs. He also earned All-Star Game MVP honors on July 14 in Philadelphia, adding to the irony of getting hurt in the same city just weeks later.

In other injury updates, Boone confirmed that left-hander Carlos Rodon and right-hander Clarke Schmidt are both expected to throw again this week. Rodon is recovering from elbow inflammation, while Schmidt is returning from Tommy John surgery performed a year ago. The Yankees' medical staff is closely monitoring all players, hoping to stabilize the roster as the playoff race intensifies.