Baltimore Ravens defensive tackle Michael Pierce, entering the final year of his contract, didn’t show up to any voluntary organized team activities over the past few weeks. And when he arrived at mandatory minicamp Tuesday, coach John Harbaugh deemed he wasn’t physically fit enough to practice.

Pierce walked onto the field to stretch with his teammates and then talked with Harbaugh. After the discussion, Pierce trotted back inside the facility and did not reappear for the remainder of practice.

“He’s not ready to practice just from a safety standpoint, for his own health,” Harbaugh said. “We recognized that and pulled him off.”

Pierce, a former undrafted free agent, developed into an important part of the Ravens’ defensive line rotation the past two seasons. Last year, Pierce played just 37.6 percent of Baltimore’s defensive snaps, but the scouting service Pro Football Focus rated him among the highest-graded defensive tackles in the NFL.

The Ravens signed Pierce to a restricted free agent tender this offseason that will pay him about $3 million for 2019. His contract is set to expire in March.