Filed under: UFC, NewsFor the third time in his last seven fights, Thiago Alves has missed weight. Alves stepped on the scale at Friday’s UFC 138 weigh-in and came in at 172 pounds, one over the welterweight limit. Alves previously missed weight for his UFC 117 fight with Jon Fitch and for his UFC 85 fight with Matt Hughes. He also tested positive for a banned diuretic at UFC 66, which he allegedly took to help him make weight. Alves made weight (171 pounds) on his second try, according to MMA J…