Bolton recovered from a poor start to earn a 1-1 draw in their opening Uefa Cup Group H game against Besiktas.
The Turkish side dominated early on and went ahead through Ailton, who took advantage of an error by Joey O'Brien and found the net with a powerful shot.
But Bolton persevered and levelled when El-Hadji Diouf crossed for Jared Borgetti to slot home from close range.
Neither side created much in the second half but Tal Ben Haim went close for Bolton when his low shot skidded wide.
Wanderers boss Sam Allardyce had made seven changes to the side that lost 5-1 to Chelsea on Saturday, with Henrik Pedersen, Kevin Davies and Bruno N'Gotty all restricted to the bench because of injuries.
However, Besiktas had problems of their own following the resignation of their coach Riza Calimbay on Monday.
Youth coach Mehmet Eksi and scout Ulvi Guveneroglu are in temporary charge of team affairs while director of football Gordon Milne finds a replacement.
But, despite being managerless, the Turkish side still made an impressive start in front of a passionate crowd at the Inonu Stadium in Istanbul, taking the lead after seven minutes.
A poor ball across defence from Ben Haim led to O'Brien losing possession and Tumer Metin sent Ailton through.
The Brazilian striker does not look the most athletic of players but he had enough pace to stay clear of the Bolton defence before smashing the ball into the top corner of the net with the outside of his left foot for a stunning goal.
At that point, Bolton were barely in the game but they slowly found their feet and gradually exposed the flaws in their hosts' approach.
Besiktas looked good going forward but defensively they were hesitant - and Bolton found themselves level with their first meaningful attack on 29 minutes.
Diouf made his way down the right flank before firing in a low cross that Borgetti turned home from close range with a clinical left-foot finish.
Bolton continued to press and Diouf almost found the target himself before half-time, flashing a snap-shot just wide of the post.
Besiktas regained some of their composure after the break but were still unable to test Bolton keeper Ian Walker, who had not been called into action since picking the ball out of the back of the net.
The Trotters did not create much either but continued to look more threatening, whether it was through Diouf's trickery or a succession of high balls sent into the home side's penalty area.
Borgetti did put the ball in the back of the net from a corner with 20 minutes to go but Diouf had strayed inches offside and the goal was ruled out.
Ben Haim also went close for Bolton when his low shot from the edge of the area flew past the post - but a winner never really looked on the cards.
However, Allardyce will still be well-satisfied after picking up a point from what, on paper, looked like being Bolton's trickiest tie of the group stage.
Bolton's next Uefa Cup game is against Zenit St Petersburg at the Reebok Stadium on 3 November.
Besiktas: Cordoba, Adem Dursun, Toraman (Zan 45), Atan, Avci, Akin, Havutcu, Kamel, Kleberson, Metin (Uzulmez 36), Ailton, Zan (Dogan 70).
Subs Not Used: Sahin, Gunes, Cihan, Ahmet Dursun.
Goals: Ailton 7.
Bolton: Walker, Jaidi, Ben Haim, Nakata, Gardner, Faye, Fernandes (Nolan 59), O'Brien, Fadiga, Diouf, Borgetti.
Subs Not Used: Jaaskelainen, N'Gotty, Pedersen, Davies, Vaz Te, Fojut.
Goals: Borgetti 29.
Ref: Ruud Bossen (Holland),