sentences:  It was not until December 2013 that Murphy's form improved and he began to consolidate a first team place, citing his improved fitness as the key to his change in fortunes.On 31 January 2015, Murphy signed a new contract with United keeping him at Bramall Lane until summer 2017.Later that day, Murphy came off the bench in the second half and scored a brace against promotion rivals Swindon Town to give United a 2–0 home victory.