Controversial quarterback Colin Kaepernick is still a free-agent even after training camp has started and the first preseason game has been played. Despite putting up a 90.7 passer rating, 59.2 competition percentage, and 16 touchdowns to only 4 interceptions last season, no one seems to want to sign him. However, starting quarterbacks have started to get injured, seemingly opening the way for someone to sign him.

Kaepernick to the Dolphins?

Last night, it was revealed that Miami Dolphins starting quarterback Ryan Tannehill would likely need season-ending knee surgery after going down with a non-contact injury in practice.

The team's current backup is Matt Moore, who is entering his 11th season in the NFL and seventh year with the Dolphins. Moore is one of the league's better backups, as he played well while the team went 2-1 when he started last year after Tannehill got injured. While Miami will likely not go 10-6 and make the playoffs with Moore starting for the whole season, they should still have a respectable record.

Colin Kaepernick would make sense to add even as a backup. The biggest issue hurting Kaepernick in Miami stems from last year's controversial wearing of a shirt with Fidel Castro's image on it and his comments when asked about it. Miami is a majority Cuban-American city and his signing would likely spark outrage among that community.

What about signing with the Colts?

Jason La Canfora of CBS Sports reported a few days ago that he's “heard plenty of rumblings about [Luck] starting the year of the physically unable to perform (PUP) list.” If that were to happen, Andrew Luck would miss the first six games of the season. He had shoulder surgery in January and the Indianapolis Colts' newly-hired GM may want to be extra cautious with the prized QB.

Luck is already on the preseason PUP, meaning he will not be playing in any exhibition games.

The Colts current backup is Scott Tolzein, who is entering his seventh year in the NFL. He has only started 3 games, going 0-2-1, and thrown 128 career passes. Behind him is fourth-year player Stephen Morris, who has never thrown a pass, and undrafted rookie Phillip Walker.

It seems logical that Colin Kaepernick would be an upgrade over Tolzein, especially if head coach Chuck Pagano wants to have a chance to try to keep his job and compete in the AFC South.

The Ravens want him

Starting Baltimore Ravens quarterback Joe Flacco has been sitting out of training camp with a back injury. All indications on Flacco's back have been positive, and it does not seem like he is in danger of missing the start of the regular season. However, backup quarterback Ryan Mallett has mostly looked awful in practice with the first-team offense, although he did have his best performance yesterday.

Behind him is Dustin Vaughan, who is entering his fourth season in the NFL and has never thrown a regular season pass.

It was reported two days ago by ESPN's Dianna Russini that head coach John Harbaugh and GM Ozzie Newsome support signing Colin Kaepernick. However, they have been met with resistance to the move by owner Steve Bisciotti.