Every week there are a few fantasy studs that come out of nowhere and this Sunday was no exception. Here are three guys that greatly exceeded their fantasy expectations in Week 7. DeMarco MurrayThe rookie running back out of Oklahoma had just 71 rushing yards on the season for Dallas.But in Week 7, Murray absolutely went off.With Felix Jones sitting out, Murray got the majority of the carries and didn’t disappoint. He carried the ball 25 times for 253 yards, including a 91-yard touchdown run in the first quarter.Dallas expected Murray to be a major contributor coming out of Oklahoma, where he ran for 50 touchdowns over his four-year career. However, I doubt they expected this kind of explosion from him so soon into his career.Arian Foster was the only running back who outperformed Murray on Sunday. Dezmon BriscoeThe young Buccaneers receiver had just four receptions coming into today, but he was able to find holes in the Chicago secondary all day long.Briscoe, in his second year out of Kansas, caught six passes for 73 yards, including a 24-yard touchdown catch in the fourth quarter. Chris Graythen/Getty Images He had career highs in catches and yards while notching his second career touchdown.I wouldn’t rush to put Briscoe in your starting lineup, but definitely keep an eye on him over the next couple of weeks. Tim TebowMany people predicted that Tebow would lead the Broncos to victory in his first start of the season, as they were facing the lowly Miami Dolphins.But I doubt anybody expected him to put up more fantasy points than guys like Matthew Stafford, Matt Ryan and Matt Schaub.Tebow did just that on Sunday, throwing for 161 yards and two touchdowns in Denver’s comeback victory.It wasn’t pretty (at all), but the kid got the job done in Week 7.