Devon-born Summerfield began his career with Plymouth Argyle aged 11 in the youth team before signing professional terms in 2005.
He made his senior debut for the Pilgrims on the final day of the 2004/05 campaign against Leicester City in the Championship, and grabbed his first goal on the opening day of the 2006/07 season with a volley to win the game 1-0 against Colchester United.
It was in March 2007 that Summerfield was loaned out to AFC Bournemouth where he made eight appearances and scored once and went on to spend a brief temporary stint with Leyton Orient.
After 91 run outs for the Argyle and a total of 13 years at Home Park he departed and joined Cheltenham Town in 2011. He spent a year with the Robins scoring six goals in over 50 appearances for the Whaddon Road side.
In 2012 he moved further north to sign for Shrewsbury Town, a side he had spent time on trial with 12-months previous. ‘Summers’ dropped down to League Two after two years with the Salop and signed for York City.
Summerfield spent two years at Bootham Crescent in the fourth tier as a major part of the Minstermen midfield. However, the end of his second and final season with City ended in heartbreak as they were relegated from the Football League and Summerfield opted to move on.
His next stop was at Grimsby Town where his first season saw him make just 23 league appearances and was loaned out to Macclesfield Town.
However, he became a major part of the Mariners midfield during the 2017/18 season as he and his side continued to establish themselves in the EFL.
After leaving Grimsby in the summer of 2018 he headed to Wales to sign a one-year contract with Wrexham. Summerfield made his debut in a 1-0 win over Dover on the opening day of the season and scored his first goal from the penalty spot in a 2-1 win over Dagenham & Redbridge.