Luton were knocked off top spot in League Two after a disappointing defeat by visitors Coventry.
The hosts went close first, with James Collins volleying over, before Coventry came inches away from an opener when Liam Kelly's 45-yard effort hit the bar.
Coventry ended their four-game scoring drought after 17 minutes when Marc McNulty's bullet header from Jodi Jones' cross beat Luton goalkeeper Marek Stech.
In the second period, Luton's Harry Cornick blasted over while Glen Rea made a crucial goal-line clearance to prevent Jordan Ponticelli from doubling City's advantage.
Danny Hylton was denied by Lee Burge on the hour mark and then rifled over on the break, while substitute Pelly-Ruddock Mpanzu was off target too.
Luke Berry missed a golden chance, firing at Burge, with Hylton then failing to beat the keeper from five yards.
However, in stoppage time, Rea was sent off after bringing down McNulty and Jordan Shipley crashed home the free-kick.
The Sky Blues then scored their third when Duckens Nazon raced clear to beat Stech.
Match report supplied by the Press Association.
