Tonkin has made the final roster as a reliever, Phil Miller of The Minneapolis Star-Tribune reports.
The right-hander had plenty of opportunities to prove his worth this spring, compiling a 4.38 ERA over 12.1 innings in Grapefruit League play. Tonkin will look to improve upon a mediocre 2016 campaign in which he finished with a 5.02 ERA over 65 appearances along with an 80:24 K:BB ratio. Look for him to serve regularly as a middle reliever.