Joined St Albans City in the summer of 2016 from Southern League side Redditch United having started the 2015-16 season at Biggleswade Town. Was persuaded to sign for City by manager Ian Allinson having previously played under Allinson at Boreham Wood. Sam was 21 when he made his City debut as a substitute during a 2-1 win at Ware in the Hers Charity Cup on 2nd August 2016. He made his National League South debut four days later and scored his first goal towards the end of the month when City defeated Whitehawk at Clarence Park. He earned national attention with interviews in The Daily Telegraph and The Sun when scoring the goal that saw off Egham Town in the FA Cup and took City through to the competition proper.
During his first season at Clarence Park 32 of his 49 appearances were as a substitute but his return of 12 goals secured a more regular place in the starting XI during 2017-18. This was his most productive season with St Albans as he scored 20 league goals for the only time during his four seasons at Clarence Park. Seven of his goals came in two games. He struck four times during a 7-2 home win over East Thurrock United and added three more when City beat Gloucester City 4-1 at Evesham United’s ground towards the end of the season. The season ended with him winning the Supporters’ Player of the Season trophy.
The 2018-19 campaign saw his form drop off from the previous campaign and he scored just nine times (including three penalties) in 41 games. The 2019-20 season continued to see him struggle for goals and his strike during a 3-3 draw at Eastbourne Borough on 11 January 2020 ended a run of 22 games without a goal that stretched back to the previous April.
He left St Albans City at the end of the prematurely terminated 2019-20 season when his contract expired and he has the unique City career statistics of 83 starting and 83 substitute appearances. He scored 48 times (five penalties) and was booked just four times.
A player of speed who could leap high into the air and seemingly hang waiting for a cross to arrive. He also has the knack of scoring spectacular goals and possesses one of the longest throws in the game. Sam is the son of England international Paul Merson.