Alexander Zverev says he is wary about ATP Masters 1000 tournaments being stretched to 12 days, arguing they can increase fatigue and lead to player dropouts. Speaking as he returns to Montreal, where he won his first Masters 1000 title in 2017, the world No. 2 and top seed comments that the current format can feel as draining as a Grand Slam fortnight. Zverev also indicates he and his team seriously considered skipping the Canada event this year, reflecting concerns about the physical and scheduling load placed on players. His comments are presented as caution about long tournaments rather than a specific complaint about any one match or opponent, and they highlight broader discussion around player workload in the ATP calendar. The concerns he raises focus on burnout and the likelihood that some players may choose to withdraw rather than continue through extended events.