Alex Rodriguez proved he’s a baller on the baseball diamond and the hardwood … ’cause he tossed up a shot Sunday from halfcourt and made it — helping out one lucky student in the process.

The former Yankees third baseman was in attendance to watch Army take on Bucknell University Saturday afternoon in basketball … and, during halftime he was invited to take a huge shot from the middle of the floor.

Check out the vid … A-Rod — clad in a bright orange Bucknell t-shirt — tosses the ball up, hits the backboard and the ball goes straight through the hoop.

Rodriguez scoops the student up into a big hug right after he won him the money … a moment that has to feel more like a dream than real life for this lucky fan.

BTW … Bucknell crushed Army, 84-53 — so, it was a pretty darn good day all around for Bucknell U.

Jane Fonda used her Screen Actors Guild Lifetime Award speech to warn her fellow actors about impending political decisions … saying they need to look out for one another — ’cause a whole lot of bad is headed their way.

The veteran actress spoke at Sunday night’s ceremony … and, while the at-times rambling speech touched a number of different topics, the crux of the speech was a warning to her fellow stars.

Jane focuses on empathy in the address … saying actors get to open people up to a variety of new ideas and concepts, and stars would need every bit of their empathy in the days ahead.

Interesting enough, Fonda never mentions President Donald Trump by name … but, it seems clear she’s referring to his administration’s policies in her speech.

Jane says this is the “documentary moment” — listen to the speech all the way through to hear what she means by that.

As you know …Fonda’s been an activist for years — fighting for the environment, voting rights and host of other liberal causes.

Tony Raines — an MTV reality TV star — was arrested early Sunday morning for operating a vehicle while intoxicated … TMZ has learned.

Raines — a contestant on “The Challenge” and “Real World: Skeletons” — was arrested on 1 count of operating a vehicle while intoxicated, 1 count of reckless operation and four counts of negligent injuring.

It’s unclear exactly what led to his arrest … but, sources tell us Raines was at a  wedding in Hammond, Louisiana on Saturday night and he went to the afterparty at a nearby restaurant after.