Bertschin was born in Enfield and began his career with Barnet before joining Ipswich Town in 1973. He made a perfect start to professional football scoring on his debut scoring the winning goal in a 2–1 victory over Arsenal in April 1976. He scored again two days later against West Ham United. He became a full member of the squad in 1976–77 scoring six goals in 30 appearances as Ipswich finished in 3rd position. Bertschin joined Birmingham City in July 1977 for a fee of £135,000. He spent four seasons at St Andrew's making 143 appearances scoring 41 goals and helped the club gain promotion in 1979–80. Bertschin joined Norwich City in August 1981 and helped the Canaries gain promotion to the First Division in 1981–82. He scored twice against his old club Birmingham in a 5–1 victory earning Norwich their first victory of the 1982–83 season. He spent the summer of 1982 playing in the United States for Jacksonville Tea Men. Bertschin left Carrow Road in November 1984 to join Stoke City. Stoke were rock bottom of the table when Bertschin joined in 1984–85 and he could do little to prevent the side failing to an embarrassing relegation which saw Stoke go down with a then record low points tally. In 1985–86 had a fine season top-scoring with 23 goals, 19 coming in the league and he won the player of the year award. Unfortunately for Stoke he was their only consistent goalscorer and the side finished in a mid-table position of 10th. He scored eight goals in 27 appearance in 1986–87 before he was sold to Sunderland in March 1987. He couldn't prevent Sunderland being relegated but played a major role in 1987–88 which saw the Black Cats win the Third Division title. Bertschin ended his professional career at Walsall, Chester City and Aldershot before dropping into non-league football. Bertschin played for Solihull Borough, Evesham United and was a member of the Barry Town team which won the Welsh Cup in 1994 with a 2–1 victory against Cardiff City. He then went on to play for Worcester City, Hednesford Town, Tamworth and finally Stafford Rangers.
Coaching career
After retiring from playing, he worked as an agent for a number of players before his appointment to the coaching staff at Birmingham City. In November 2007, when Birmingham manager Steve Bruce left to join Wigan Athletic, Bertschin and other members of Birmingham's backroom staff accompanied him. In June 2009, when Bruce moved on to Sunderland, Bertschin again followed. On 29 June 2012 it was announced that Bertschin had taken up the post of first team coach at Hull City. On 2 August 2016, the club sacked Bertschin from his position of first team coach. Bertschin replaced Marcus Bignot as manager of Solihull Moors on 9 November 2016.
