Birthday boy Ian Boswell , Geraint Thomas and Bernhard Eisel all took big turns to deliver Swift on to Cavendish 's wheel .
Once the Manxman launched his sprint , Viviani was unable to round his rival and seal a repeat of Thursday 's success .
Birthday boy Ian Boswell , Geraint Thomas and Bernhard Eisel all took big turns to deliver Swift on to Cavendish 's wheel , but once the Manxman launched his sprint , Viviani was unable to round his rival and seal a repeat of Thursday 's success .