[1] He appeared in 409 Swiss Super League games during 14 seasons, representing in the competition Wettingen, St. Gallen and Zürich.

He was the undisputed starter throughout his three-season stint in Germany, featuring in 96 matches all competitions comprised and relegating legendary Uwe Kamps to the substitutes bench.

[4][5] Stiel returned to his country in the summer of 2014, going on to work with FC Basel's youths as a goalkeeper coach.

[6] Stiel won 21 caps for Switzerland during three-and-a-half years, and was the country's first-choice at UEFA Euro 2004, appearing in all three group games in Portugal.

In the 0–3 loss against England, one of the goals came after deflecting from the post onto the back of his head, although it was officially credited to Wayne Rooney.