Willingham reached base in the ninth inning of Sunday's game against the Cubs on a ground ball to third baseman Ian Stewart. Originally ruled an error, the play was reviewed by Major League Baseball, which ruled it a hit for Willingham.
The outfielder made the most of the adjustment, hitting a solo home run leading off the sixth inning on Wednesday to extend the streak to 15 games.
Willingham joins San Francisco's Angel Pagan as the only players in baseball with two hit streaks spanning 14 games or more this year. Willingham put together a 15-game hit streak from April 6-21.
Entering Wednesday, Willingham was hitting .365 with four doubles, four home runs, and 15 RBIs during his current streak. Additionally, his .969 OPS this season ranked third among qualified American League outfielders.