Following a day of steady rain that drenched the back fields at Osceola County Stadium, the Astros kept things light in Friday’s final workout before the full team hits the field on Saturday.

Three groups pitchers, including Erik Bedard, Philip Humber, Jordan Lyles, Dallas Keuchel, Jose Veras and Josh Fields, got their work in on the mound, but the pitchers got a break from their fundamental stations.

“We didn’t want to mess up the fields,” Astros manager Bo Porter said. “The dirt is a little bit soft. I talked to the grounds crew they strongly recommended that if we could stay off the field it would be better moving forward.”

Friday marked the official reporting date for position players, and outfielder Chris Carter — acquired in a Feb. 4 trade with Oakland — shortstop Jonathan Villar, catcher Carlos Perez and outfielder Che-Hsuan Lin were among those showing their faces for the first time.

Here’s video of Carter talking to MLB.com on Friday morning.

Porter will address the team as a whole for the first time Saturday at 9 a.m. ET, with owner Jim Crane and president and CEO George Postolos scheduled to be in town as well for the first full-squad workout.

“Guys are eager to get here and get around teammates and get started,” Porter said.

In other news:

• Relief pitcher Hector Ambriz, who rolled his ankle in a drill Thursday, wasn’t able to throw off the mound Friday. He was seen by a team doctor and diagnosed with an ankle sprain and put in a walking boot. Porter said he is day-to-day.

The day was abbreviated, but there was still time for pictures:

Rene Garcia greets shortstop Jonathan Villar upon his arrival in camp.

First base coach Dave Clark and GM Jeff Luhnow talk.

Our first look at catcher Carlos Perez, acquired from Toronto last July.

Ross Seaton signs an autograph.

Rule 5 pick up Josh Fields prepares to throw a pitch.

Rudy Owens, acquired from Pirates in Wandy Rodriguez trade, works in bullpen.

Catcher Rene Garcia puts on his gear.

A coach greets bullpen coach Dennis Martinez.

Bench coach Eduardo Perez lays down the law.