By Michael Hann LONDON (Reuters) - Premier League Hull City were given a fright as they had to come from behind twice to beat obstinate third tier side Sheffield United 5-3 in the FA Cup semi-final at Wembley on Sunday to reach the final for the first time. In a frantic opening half, Jose Baxter gave Sheffield United a shock lead on 19 minutes. Yannick Sagbo equalised for Hull on 42 minutes, but Stefan Scougall restored the League One side's advantage just before halftime. Hull fought back at the start of the second period with substitute Matty Fryatt and Tom Huddlestone scoring in quick succession, before Stephen Quinn's header effectively wrapped up victory for the Premier League side. Click here to read full news..