MARK Lemon and Jason Lyons will add some much-needed bite to the Rockets' line-up for this weekend's Great Northern Tour.The Silver Ski Rockets have named the guest replacements that will cover for injured number one rider Robert Mear during this weekend's trip north.

MARK Lemon and Jason Lyons will add some much-needed bite to the Rockets' line-up for this weekend's Great Northern Tour.

The Silver Ski Rockets have named the guest replacements that will cover for injured number one rider Robert Mear during this weekend's trip north.

Newport's Mark Lemon will deputise for the Mearkat at Edinburgh on Friday night.

Birmingham's Jason Lyons will be the main man at both Berwick on Saturday and Glasgow the following day.

As a pointer to form, Lemon delivered scores of 10 and 12 at Armadale when representing former club Reading in the League and Trophy there last season.

Former World Cup winner Lyons, meanwhile, produced scores of 14 and 11 for the Brummies in two visits to Berwick in 2008 - plus an 18-point haul guesting for Workington in the Young Shield Final.

His two trips to Glasgow netted paid scores of 18 and 14.

Rye House will be hoping that both can produce similar form as short-term Rockets replacements this weekend.