Mark Davies was a product of the Wolverhampton Wanderers youth system, and spent his formative years in the Midlands, signing his first professional deal aged 17 in 2005. Davies suffered a series of injuries which led to him being loaned to Leicester City in 2008 which brought wider attention to his abilities. At the time, Bolton Wanderers had just signed Wolves youth supremo Chris Evans and his first act was to recommend the signing of Davies for £1m in January 2009 describing him as the "best prospect to come out of the youth system since Robbie Keane and Joleon Lescott".
Davies began his Bolton Wanderers career as a substitute, before making his debut as Man-of-the-Match at home to Tottenham Hotspur. He would be in and out of the side under Gary Megson, before finally pinning down a regular starting spot when Owen Coyle joined the club. He would prove to be a vital member of the side with his trademark surging runs from midfield becoming a favourite with the fans.
Attention from other clubs soon followed, most notably from Swansea City, though a deal was never officially struck between the two clubs. Davies stuck with Bolton Wanderers following relegation, and proved again to be an important player in their attempts to get back into the Premiership. Davies signed a long term contract extension in February 2013, though suffered a serious knee injury just days later which will likely keep him out until at least the New Year 2014.