Goal-shy Empoli drew a sixth consecutive Serie A blank in grinding to a stalemate with Chievo.Chievo had Lucas Castro sent off for a second yellow card on 80 minutes, but not even that proved sufficient to break the hosts' drought.Empoli have not found the net since their 2-1 league win over Crotone on September 12, leaving boss Giovanni Martusciello's side without a goal in 574 minutes.The draw leaves Empoli just one place off the foot of the Serie A table, while Chievo sit seventh, having failed to capitalise on Lazio's 2-2 draw at Torino.ends