Guerdat was already the Swiss public's favourite even before he was crowned Olympic champion last summer and installed as world number one.
But those feats have only served to raise expectancy on his shoulders as he seeks to win the Top 10 for a second time, having claimed victory in the 2010 event.
Two years ago Guerdat won with Jalisca Solier and he will again be aboard the French mare, who the Swiss has labelled the horse of his life.
Guerdat faces stiff competition though, in the form of Kevin Staut, Rolf-Göran Bengtsson and Marcus Ehning.
Also on the agenda in Geneva is a carriage driving World Cup qualifier, the Geneva Crédit Suisse Classic showjumping event and a high jump class.
The highlight of the action at the Palexpo remains the jumping World Cup Grand Prix on Sunday afternoon.
Half way through the season, Sergio Alvarez Moya and Staut lead the provisional rankings.
With a lead of more than 20 points - equivalent to a Grand Prix win - over their rivals Jeroen Dubbeldam, Pius Schwizer and Christian Ahlmann, the pair are untouchable this weekend, although the gap between them and chasing pack could be shortened.