The Tennis Court at Lincolnshire Marriott Resort
Lincolnshire Marriott Resort's tennis court is mentioned by professional travelers. Of the 2 professionals tracked on TripExpert, 2 mentioned the tennis court, including Gayot and Star Service.
Lincolnshire Marriott Resort 
Gayot
Star Service
Gayot "Fellow meeting attendees bond on the golf course and tennis courts, while accompanying families enjoy the playground, game room and swimming pools --- there is one indoors and one out"
Star Service "Recreation is a big draw, with two pools, a whirlpool, well-equipped gym, tennis, discounts on the golf course and a playground for the kids"
