The Washington Nationals plan to place starting pitcher Dan Haren on the 15-day disabled list, general manager Mike Rizzo said Sunday.
The Nationals didn't give a reason or a timeframe for the move, but Haren has experienced hip and back problems this season.
He pitched Saturday against the Colorado Rockies and gave up six earned runs in 3 1/3 innings in a Nationals loss.
"There's aches and pains. Nothing I haven't pitched through in the past," Haren said after Saturday's game, according to The Washington Post. "Physically, I'm OK. I've been better; I've been worse. It's still no excuse for what's going on."
After signing a one-year, $13 million contract before the season, Haren has struggled to a 4-9 record with a 6.15 ERA. The 32-year-old right-hander has given up the most hits, earned runs and home runs in the National League this year.