DAVIE, Fla. -- Fantasy alert: A former Pro Bowl running back makes a move up on Day 5 of training camp.

New addition Arian Foster, who signed as a free agent with the Miami Dolphins less than two weeks ago, received a bulk of the first-team reps on Tuesday night. Foster made some quality runs during goal-line drills that showed veteran savvy.

The Dolphins' Arian Foster shined in goal-line work during Tuesday's practice. Steve Mitchell/USA TODAY Sports

It is probably in Jay Ajayi's best interest to get healthy fast, because we’ve seen this story with Foster before. The former undrafted running back patiently waited his turn in Houston and began as a third- and fourth-string player. Foster finally got his chance to shine toward the end of his rookie year in 2009 and took over the spot with the Texans for the next six seasons.

Ajayi has a history of injuries, whether it was his knee in college or ribs last year during his rookie season. Ajayi also suffered a bone bruise over the weekend by knocking knees with linebacker Jelani Jenkins and missed the past two practices, which opened the door for Foster.

This competition could be a close race and likely will come down to the preseason games.

Here are some other notes from Dolphins camp: