But Walker broke that tie with his 18th in quick fashion Thursday night, hitting a two-out, two-run homer in the third inning of Double-A Chattanooga's game against Jacksonville.
With No. 1 overall prospect Byron Buxton up in the bigs now, Chattanooga has been compensating at the plate with a mix of Walker, Twins No. 2 prospect Miguel Sano, No. 14 Stuart Turner, No. 15 Max Kepler and No. 16 Travis Harrison.
As evidenced by his power surge, Walker has been the most impressive of the bunch this season, hitting .268/.318/.574 with 55 RBIs entering Wednesday's contest.
Alex M. Smith is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.