U.S. stock futures were higher this morning, with the S&P 500 futures gaining around 0.2% on Tuesday.Shares of Dave & Buster’s Entertainment Inc PLAY fell sharply in pre-market trading as the company posted weaker-than-expected results for the second quarter.Dave & Buster's reported second-quarter revenue of $557.41 million, missing analyst estimates of$562.78 million, according to Benzinga Pro. The entertainment and dining company reported adjusted earnings of 40 cents per share, missing estimates of 92 c ...