Story of the match
With the roof re-opened following the first semi-final, neither player could be separated through the opening 30 minutes in humid, heavy conditions.
Following a four-set scrap with upstart Danish teenager Holger Rune, the Norwegian was soon under the pump when in a pivotal seventh game, 2014 US Open champion Cilic pounced.
A heavy cross-court forehand winner secured the first break and after fending off a challenge on his own serve, the Croatian took matters into his own hands, hammering an inside-out forehand to snatch the double break and with it the set.
Ruud was standing so far back to return serve he was almost pinned against the rear advertising boarding.
He had made little impact on the Cilic serve but after four bungled chances, finally made good on his fifth break point to edge ahead 2-1 in the second.
A slew of garish unforced errors from the 20th seed threatened to surrender the double break but another patch of brilliance – including an ace and forehand winner down the line – kept him within striking distance.