Ronaldo set off in Real Madrid draw
Substitute Ibai Gomez's volley canceled out Jese Rodriguez's opener for Madrid, which played the final 15 minutes a man down after Ronaldo was sent off for swiping his hand across Carlos Gurpegi's face following a shove from his opponent. The contact seemed light, but Gurpegi fell to the ground as if he'd been hit hard.
Jese lunged to guide Ronaldo's cross into the area beyond goalkeeper Gorka Iraizoz for the 65th-minute opener in a game that was dominated by Bilbao up to that point.
Gomez made up for earlier misses by Aritz Aduritz and Ander Herrera when he ran onto a cleared ball outside the area to rip an unstoppable shot past goalkeeper Diego Lopez in the 73rd.
The intensity boiled over moments later when Ronaldo and Gurpegi tangled, the Ballon d'Or winner's straight red card means he will miss Madrid's next game.
''It's difficult when you lose a player without reason,'' Madrid defender Marcelo said. ''It's already difficult to score one point here but Madrid has the obligation of winning every game. So (the red card) made it tougher.''
Gomez nearly scored the winner in the 85th from another volley but Lopez tipped it over as Bilbao improved to 43 points in fourth.