Greg Cote’s Hot Button topics: Dolphins, Olympics, A-Rod lead list

1. DOLPHINS

Miami wins at Giants in preseason opener: Club’s 51st season launched with a fake-game win Friday. Be happy, Dolfans, but moderate. I’d remind you the 2007 Dolphins who went 1-15 won their preseason opener, too.

2. OLYMPICS

Swimming, gymnastics lead way for U.S.: Team USA is looking good in the medal count at the Summer Games’ midpoint in Rio, led by gymnast Simone Biles and that really tall swimmer. Forget his name. Um, Michael Phelps, maybe?

3. MARLINS

With Ichiro drama past, playoff chase takes stage: Fish are in tight fight for second NL wild-card spot as team sets out Monday on seven-game road trip. Ichiro finally got 3,000th hit. Now, can franchise get third playoff berth?

4. ALEX RODRIGUEZ

Miami’s A-Rod plays last game for Yankees: Rodriguez’s last game in pinstripes came Friday. He’s now retired, unless Marlins sign him because they decide their playoff run could use a little circus-y distraction.

5. HEAT

Four marquee visits highlight schedule: Miami season features Nov. 10 return by Dwyane Wade in Bulls uni, one visit by Kevin Durant’s Warriors, and two late-season visits by the champion Cavs and their top player, Whatshisname.