Two goals from Ismaila Sarr saw second-placed Watford take another step towards promotion back to the Premier League with a win over Reading at Vicarage Road.
The Senegalese gave the hosts the lead with a curled effort after cutting in from the right and just under two minutes later made it 2-0 with a fiercely struck shot that gave visiting goalkeeper Rafael Cabral no chance.
The visitors should have pulled one back when George Puscas hit the post from close range with the goal open.
Watford are now 12 points clear of third-placed Brentford, having played two games more, and five behind Championship leaders Norwich.