aaron lennon opened the scoring for the visitors with his second goal in three games for the visiting side .
but jonjo shelvey converted from the spot in the second half after seamus coleman handled in the penalty area .
shelvey had a goal ruled out by referee michael oliver after leighton baines was adjudged to have been fouled .
the 1-1 draw leaves swansea eighth in the premier league table with roberto martinez 's men sitting in 12th .