The world loves a good head to head. Ali versus Frazier; Botham versus the Aussies; the Indoor Rowing News's Granny versus the bloke behind the counter at Chiswick Post Office. Whatever the result, the public's the winner. Except, somewhat annoyingly, this Sunday, when the World IRC will be going mano a mano with the Manchester Grand Prix.In Manchester, you've got the conclusion of this year's Grand Prix series at the most excellent Manchester Velodrome. The second biggest race in the UK after the British IRC, Manchester always provides a good day's racing and, with many of the overall series medals still up for grabs, Sunday should be no exception.For more information on the Grand Prix series: go to http://www.therowingcompany.com/gp/. On the same time but five time zones apart, a 70-strong British team will be in Boston trying to come close to last year's superlative World IRC medal haul of seven golds, two silvers and five bronzes. You can find a team list up at http://www.therowingcompany.com/wirc/team.php. If you're not going, however, and want to keep up with what's going on: never fear. Results will be going up throughout the day, and we aim to have all the results, along with reports and photographs, online by about 11pm GMT at http://www.therowingcompany.com. If you've got access to a broadband connection between 1pm and 9pm GMT, you can also watch things unfold in real time via the webcast at http://www.concept2.com.