Complex sentence: Thomas "Tom" Williams was a Welsh professional rugby league footballer who played in the 1910s, playing at representative level for Wales, and at club level for Oldham, as a, i.e. number 2 or 5.
Split into simpler sentences: Thomas "Tom" Williams was a Welsh professional rugby league footballer who played in the 1910s. He played at representative level for Wales, and at club level for Oldham, as a, i.e. number 2 or 5.