Chaplow opened the scoring in the 14th minute when he passed the ball into the bottom corner after a one-two with Guly Do Prado. |
The striker took his league tally to eight with spot-kicks in the 22nd and 55th minutes before Guly Do Prado and Lee Holmes netted late on. |
Rickie Lambert netted two penalties and Guly Do Prado and Lee Holmes also netted as the Saints ended a poor return of one point from their last two games, both away from home. |
Guly do Prado headed home either side of half-time to extend Saints' unbeaten run at home to an impressive 24 league games. |
And further strikes from Guly Do Prado and substitute Lee Holmes finished off a Watford side that never really got going. |
Brazilian striker Guly netted a brace, with Adam Lallana scoring and Lee Barnard adding a fourth. |