Lawrence fired 1.1 scoreless innings in Sunday's 8-1 loss to the White Sox, recording one strikeout.
The 29-year-old right-hander had endured a rough Mariners debut in the opening game of the series against the White Sox on Thursday, giving up a pair of earned runs on four hits over two innings. Sunday's effort was therefore encouraging, especially considering Lawrence had arrived in Seattle with an 0-3 record and 8.78 ERA amassed over four appearances with the Blue Jays in April. Lawrence figures to see fairly regular work for the time being, considering the fatigued state of the Mariners' bullpen and the injury-riddled condition of the starting rotation.