Jeff Fisher won't say how long Danny Amendola is out

• Fisher said he was certain Amendola would miss the Oct. 14 game at Miami.
• Amendola told the AP in a telephone interview he didn't know how long he would be sidelined.
• Reports have surfaced that Amendola would miss six weeks with a separated shoulder.

ST. LOUIS (AP) — St. Louis Rams coach Jeff Fisher had little to say about the condition of Danny Amendola, calling it a "competitive issue" after the receiver was injured during Thursday night's win over Arizona.

Fisher said he'd have an injury report on Wednesday regarding Amendola but said he was certain the receiver would miss the Oct. 14 game at Miami.

"If Danny's going to miss a game, I'll discuss it at a time at which I'm sure that he's going to miss a game," Fisher said Friday.

The Rams reported a shoulder injury during the game. Amendola was pointing to his right collarbone after coming to the sideline after just missing a diving catch in the second quarter.

Amendola told the Associated Press in a telephone interview he didn't know how long he would be sidelined.

The St. Louis Post-Dispatch and ESPN, both quoting sources, said Amendola had a separated sternoclavicular joint where the collarbone meets the breastbone and likely would be out about six weeks but could return earlier.

A TV camera caught Amendola flinging his helmet into a wall with his left hand while walking in a tunnel to get X-rays. He had the arm in a sling after the game, but the Rams did not make him available to reporters.

Amendola had a 44-yard reception on the Rams' first drive, setting up a TD pass from Sam Bradford to Lance Kendricks. Amendola entered the game with 31 receptions, second in the NFL, with two TDs and an 11.3-yard average.

Amendola missed virtually all of last season after dislocating his left elbow in the opener and then injuring a triceps muscle while rehabbing.

The injury figures to get veteran Steve Smith, inactive the last two weeks, back into a mix that includes fellow veteran Brandon Gibson, rookies Chris Givens and Brian Quick and second-year player Austin Pettis. Smith has five receptions for 70 yards.

Safety Quintin Mikell has a concussion and fullback Brit Miller, a key component on special teams, has a sprained right ankle.