TAMPA, Fla. — A.J. Greer and Eetu Luostarinen scored short-handed goals 42 seconds apart in the second period to help the Florida Panthers beat the Tampa Bay Lightning 4-2 on Sunday to open a home-and-home series. With Tampa Bay on a power play midway through the second, Nikita Kucherov fanned on an entry play, with Greer taking the puck and …