Nahki Wells scored from the penalty spot but Bradford City still ended up losing their League Two play-off semi-final against Burton Albion 3-2 at Valley Parade.Calvin Zola's double gave Burton a one-goal lead to take into Sunday’s second leg.The 28-year-old striker headed the Brewers ahead in the 23rd minute before curling in a second six minutes later.Wells’ penalty, after Damian McCrory handled in the area, got the hosts back into the tie but Robbie Weir's strike made it 3-1 at the break.Garry Thompson halved the deficit with a thunderous 25-yard drive that skimmed off Gary Jones on its way into the net.Bradford City manager Phil Parkinson said: "After the way we played in the first half I'm glad we're only one goal behind."The play-offs can do strange things and we got punished."It was one of our poorest displays defensively. We were really poor and we didn't work as a unit."This group of players has been tremendous and we need another great performance on Sunday."