Complex sentence: His progression continued as he went on to make his league debut at Elland Road against Leeds United, on 11th February 2007, and then made his first start for the club on 3rd March 2007 against Burnley at Turf Moor.
Split into simpler sentences: His progression continued as he went on to make his league debut at Elland Road against Leeds United, on 11th February 2007. Spence made his first start for the club on 3rd March 2007 against Burnley F.C. at Turf Moor.