Nathan Lyon's future on the Ashes tour is uncertain after he arrived at Lord's on Friday on crutches, as the Australian camp reported the bowler had suffered a "significant calf strain". The off-spinner limped off during Thursday's second day of the second Test after pulling up, having run in from the boundary while fielding. The 35-year-old, appearing to wipe away tears, eventually limped around the boundary edge towards the dressing room while a staff member supported him. Lyon, appearing in his 100th consecutive Test, joined his team-mates at Lord's on Friday morning, using crutches and wearing a compression sock.