Bills vs. Jaguars 2015: Time, TV schedule and Yahoo! live stream

The NFL returns to London's Wembley Stadium on Sunday with the Jacksonville Jaguars "hosting" the Buffalo Bills. Could the graveyard of NFL head coaches claim another?

For the third year under Gus Bradley, Jacksonville appears destined for irrelevancy. The team won only one contest so far this season -- a narrow 23-20 victory over the similarly hapless Miami Dolphins -- and has stumbled through the easiest part of their schedule. The Jaguars dropped games to the Andrew Luck-less Indianapolis Colts, the struggling Tampa Bay Buccaneers and a Houston Texans team with an under-the-weather J.J. Watt.

Through it all, the Jaguars have rarely appeared competitive. Blake Bortles, the quarterback in which Jacksonville invested the No. 3 overall pick last season, has thrown at least one interception in four of the team's six games. New lead tailback T.J. Yeldon averages just 3.6 yards per attempt and has found the end zone just once in 2015. Meanwhile, Bradley's defense allows 29.3 points per game, worst in the conference.

Multiple head coaches have seen their runs come to an end after a poor showing in the London games. Last year, the Oakland Raiders severed ties with Dennis Allen after the team lost to the Miami Dolphins by 24 points in Wembley Stadium. Miami continued the trend this year, firing Joe Philbin after a 27-14 defeat to the New York Jets. No reports have indicated that Bradley could lose his job midseason, but with the bye week approaching, a particularly poor performance by the Jaguars could make the front office reconsider their commitment -- especially for a coach who owns an 8-30 record in his three seasons in charge.

Over in Buffalo, the season hasn't gone as smoothly as new Bills head coach Rex Ryan probably anticipated. Their best win came at the expense of the Colts, though the Week 1 victory looked better at the time than in hindsight. If not for the Tennessee Titans choking away a game in Week 5, the Bills would find themselves in the middle of a three-game losing streak.

Their recent struggles may be the result of several injuries. Starting quarterback Tyrod Taylor sprained his MCL in Week 5 and will miss his second straight game this Sunday, leaving 2013 first-round pick EJ Manuel to start in his place. Wide receivers Sammy Watkins and Percy Harvin are also out, as is rookie running back Karlos Williams.

Regardless of who can't play on offense, their defense needs to return to form. Over the past three weeks, the unit yielded an average of 23.7 points, over five points more than it allowed last season on a per-game basis. Though some regression to the mean is expected, the task becomes considerably more difficult if defensive tackle Kyle Williams misses significant time. Williams did not travel with the team to London, and his long-term outlook remains unclear.