Vanessa Hudgens and MLB player Cole Tucker are getting pretty serious ... 'cause the "High School Musical" star showed up to his spring training game Tuesday to cheer him on!!
The 32-year-old -- who made things Instagram offish with the 24-year-old Pirates utility man last month -- rocked a Pittsburgh jersey and sat just a few rows behind home plate to check out her BF.
Hudgens was there with her pal, GG Magree -- and you can see in the footage they shot out at LECOM Park in Bradenton, FL ... they were super into Cole's game!!
The two went crazy when Tucker nearly beat out a broken-bat ground ball to second base ... and then they jammed out to "Take Me Out To The Ballgame" later on.
The bad news? Tucker didn't impress much during the Pirates' 1-0 win over the Twins ... he was 0-for-2 with a walk while serving as his team's designated hitter for the day.
But, hey ... it's spring training after all -- AND the dude gets to go home to Vanessa Hudgens at the end of the day.
Not a bad Tuesday at all, right??