KEEP IT TIGHT

WNBA star Skylar Diggins is a very serious athlete ... so if you can't take your eyes off how hot her ass looks in the very serious training video you're about to see ... it's not her problem.

We tried ... we failed.

Happy Monday.

See also

Elizabeth Hurley -- Mellow And Supremely Hot In Yellow (PHOTO)

Luke Wilson -- That Heavy Look ... Is So Old School (PHOTO)

Kenny Chesney -- Forget Horseshoes ... I'm Ballin' in Malibu

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