The Florida Gators will be without starting cornerback Jalen Tabor and quarterback Treon Harris for Saturday's game against the Tennessee Volunteers.
Tabor and Harris, both sophomores, have been suspended for "some choices they made," coach Jim McElwain told reporters after practice Wednesday.
While McElwain didn't disclose the reasons, a source told ESPN's Brett McMurphy that Harris' discipline was for a failed drug test and that Tabor's was for refusing to take a drug test, which results in an automatic suspension.
"They won't be with us this week," McElwain said. "We need some guys to step up. They'll be back next week."
Harris was suspended from the team in October 2014 because of accusations of sexual battery, but he was later reinstated after the allegations were withdrawn. Tabor was cited for marijuana possession in May.
Scout.com site InsidetheGators.com earlier reported Tabor's suspension.
Tabor has started two of Florida's first three games this season, returning an interception 39 yards for a touchdown and leading the Gators with five passes defended.
He also has seven tackles, including one for loss. Tabor was named to the SEC All-Freshman team in 2014.
He started five of the 12 games he played in and led all of Florida's freshmen with 31 total tackles, including four tackles for loss. He also had two sacks, eight pass breakups, and an interception.
Sophomore Quincy Wilson started ahead of Tabor in Florida's 14-9 win over Kentucky last week.
Through three games, Wilson has an interception and eight tackles.
Harris replaced starter Jeff Driskel in the third quarter of last year's Tennessee game, rallying the Gators to a 10-9 win after they trailed 9-0 in the fourth quarter.
Harris started Florida's final six games of the 2014 season, finishing with a 4-2 record. He completed 49.5 percent of his passes for 1,019 yards, nine touchdowns and four interceptions.
Harris started Florida's 2015 opener against New Mexico State, passing for 215 yards and two touchdowns, but split time with redshirt freshman Will Grier during the Gators' 61-13 win.
Grier started in Florida's next two wins, over East Carolina and Kentucky. While Harris saw time against ECU, throwing for 58 yards on 5-of-8 passing, he did not play against the Wildcats.
Earlier this week, McElwain would not commit to Grier as the Gators' starter against Tennessee (2-1) on Saturday and said that a starter would be decided on later in the week.
Grier is now expected to make his third straight start for the Gators (3-0, 1-0 SEC).
Grier threw for 125 yards with an interception against Kentucky and recorded a team-high 61 rushing yards and a touchdown.
On the season, Grier leads Florida with 442 passing yards and has thrown four touchdowns and two interceptions.