Ferrari's decision to debut a significant engine upgrade at Monza for their home Italian Grand Prix weekend positioned Charles Leclerc as the clear favorite for fastest lap in Practice 1. The Monegasque delivered on that expectation, posting the session's quickest time of 1:23.008s on medium tires to lead a Ferrari one-two ahead of teammate Lewis Hamilton. Traders priced in this outcome based on the Scuderia's straight-line speed advantage at the Temple of Speed, combined with Leclerc's strong recent form and the enthusiastic home support. The near-certain implied probability reflects broad consensus on these factors. Only an unexpected mechanical problem, major session disruption, or sudden weather shift would realistically alter the result.