Lawrence was optioned to Triple-A Tacoma on Wednesday, Bob Dutton of The Tacoma News Tribune reports.
Lawrence played a prominent part in the Mariners' 20-7 loss to the Twins a day earlier, surrendering six runs on 11 hits in 3.2 innings in relief. His ugly showing coupled with the fact that he likely wouldn't be available for the next couple of days prompted the Mariners to bring aboard a fresh arm in Paul DeJong, who is expected to work in long relief for the big club.