What Miami Dolphins head coach Adam Gase said Thursday (training camp)

Adam Gase is launching his third season. (Allen Eyestone/The Post)

DAVIE — The Dolphins opened training camp with a two-hour practice in the sweltering heat, and they’re moving toward the upcoming season confident that they can upend their underdog perception.

The best news for Miami is that every player reported on time and was healthy enough for the first practice, though the team is working without pads the first two days of camp.

[RELATED: Exclusive photos from opening day of Dolphins training camp]

Here are coach Adam Gase’s updates after Day 1:

— The Dolphins remain upbeat about Ryan Tannehill’s recovery from the knee injury that wiped out his 2017 season, but there’s still some concern about eventually shifting into live contact situations. The team also wants to work with him on his sliding technique as a preventative measure.

— Gase declined to get into the national anthem policy debate, but couldn’t envision a player actually being suspended.

— Veteran slot receiver Danny Amendola looks “exactly like the guy we played against last year,” Gase said.

— The team will begin using shoulder pads at practice Saturday and be in full pads Sunday or Monday. That’s especially important when it comes to the rookies. Gase wants to see if they play like they did in college.

— It was in the low 90s for this morning’s work, and Gase thought it was possibly the hottest practice he’s had since he got here.

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