Though a promising talent, he never lived fully up to expectations, and appeared in only 21 league matches for the "Eagles", in which he scored three goals.
In the second leg in Frankfurt a fortnight later, the game was still deadlocked goalless when, in the 77th minute, Eintracht coach Friedel Rausch took off defender Norbert Nachtweih and replaced him with Schaub.
Only four minutes later, the youngster scored what would prove to be the only goal of the match, and thus secured the first European Cup in the history of Eintracht From January 1981 until June 1983, Schaub played in the second division for SpVgg Fürth, where he scored 36 goals in 84 matches, a good enough record for Borussia Dortmund to provide him with an opportunity for a comeback in the Bundesliga.
In his first season, the club finished runner-up in the championship and reached the cup final, losing both competitions to the then mighty FC Tirol Innsbruck, who were coached by the legendary Ernst Happel.
After his time with Admira, he had a spell with newly promoted VfB Mödling, second division side Favoritner AC and, finally, amateur outfit USC Wampersdorf.