The Babysitter 9 (2013)

When his ex-wife leaves for an extended business trip, a community college P.E. teaches hires a cute neighbor girl to be a full-time baby sitter. The perky young woman agrees, but only if he can help her get on the college's tennis team, and soon the one-on-one coaching turns into a fiery love feast as the two discover their penchant for the erotic arts.