print deadlock information adds a new parameter of 2, which allows you to print a summary of deadlock information to the errorlog. For example:
Deadlock Id 34: Process (Familyid 0, Spid 70) was waiting for a 'exclusive page' lock on page 10858346 of the 'equineline_job' table in database 18 but process (Familyid 0, Spid 88) already held a 'exclusive page' lock on it. Deadlock Id 34: Process (Familyid 0, Spid 88) was waiting for a 'exclusive page' lock on page 11540986 of the 'equineline_job' table in database 18 but process (Familyid 0, Spid 70) already held a 'update page' lock on it.