LONDON :Stepping into the shoes of record-breaking Australian prop James Slipper will be no easy task but replacement Tom Robertson feels there is plenty of depth in the front row for the Wallabies. The 36-year-old Slipper quit test rugby earlier this month after his 151st appearance for Australia, making him the third most capped international after Alun Wyn Jones of Wales and New Zealand’s Sam Whitelock. He had been a stalwart of the side right up to his retirement, starting at loosehead prop