On 14 August 1971, 20-year old Kevin Keegan debuted for Liverpool, scoring in a 3-1 win over Nottingham Forest. He went on to score a total of 100 goals for them over six seasons, winning three league titles, an FA Cup, and the European Cup.
Keegan started his professional career with Fourth Division Scunthorpe in 1968 and made 141 appearances there before moving to Liverpool in the summer of 1971 for a transfer fee of £35,000. Initially a midfielder, his scoring ability prompted manager Bill Shankly to move him to forward.
He made 42 appearances for Liverpool across all competitions that first season, scoring a total of 11 goals as the Reds finished third in the league table. He doubled that tally the next season, winning his first league title and the UEFA Cup. Although that was his most prolific scoring season at Anfield, he won the FA Cup in 1974, then won a league and UEFA Cup double in 1976, followed by another league title and the European Cup in 1977.
In the summer of 1977, after making 323 appearances, he moved to Hamburg for a fee of £500,000.