Lüthi first played with local club FC Subingen in the fourth tier of the Swiss football league system. He joined Basel's first team for their 1981–82 season under head coach Helmut Benthaus. Lüthi's first game was in the Cup of the Alps, played in Stade Armand-Cesari away against French team Bastia and Basel won 4–0.[1]
After then playing in four test games, Lüthi played his domestic league debut for his new club in the home game in the St. Jakob Stadium on 29 August 1981. Lüthi was substituted in the 70th minute and he then scored his first goal for his club as Basel won 1–0 against FC Bulle.[2]
Lüthi played with Basel for five seasons and during this time Lüthi played a total of 206 games for Basel scoring a total of 18 goals. 105 of these games were in the Nationalliga A, 13 in the Swiss Cup, two in the Swiss League Cup, three in the Cup of the Alps and 83 were friendly games. He scored six goals in the domestic league, the others were scored during the test games.[3]
Following his time with Basel, Lüthy moved on and played two seasons with Grenchen, who at that time played in the Nationaliga B. Lüthi then returned to the city of Basel, but this time he signed for Old Boys, also in the Nationaliga B. He stayed with them until summer 1992, when he retired from his professional playing career.
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