Zac Stacy's Instant Fantasy Reaction After Week 8

A fantasy monster has emerged in St. Louis at one of the worst positions of all this year.

Rookie running back Zac Stacy took the starting job in St. Louis for the Rams and has not looked back, and as NFL Network's Michael Fabiano comments, he's made the most of his opportunity:

Savvy owners grabbed Stacy off the waiver wire weeks ago. The rest were fully alerted to Stacy's extreme value with his performance on Monday Night Football under the national microscope against Seattle.

Presented with the challenge of finding room to operate against a Seahawks defense that entered the contest allowing just 91.6 yards per game, Stacy himself erupted for 134 yards on 26 carries.

UPDATE: Tuesday, Oct. 29, at 12:23 a.m. ET

Although he had a terrific fantasy night, it must be noted that Stacy did suffer an ankle injury late in the fourth quarter according to the Rams Twitter account and Mike Garafolo of FOX Sports:

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In his past four games since ripping the starting job from Daryl Richardson, Stacy has rushed for 78 yards or more in three of them.

While he has yet to find the end zone, Stacy is the elusive and clearly dying every-down-back in a league that favors committees.

In fantasy, touches equal production no matter what, and Stacy has a firm grip on the main role in St. Louis and will continue to be called upon, especially with starting quarterback Sam Bradford out for the year.

Stacy's Week 8 performance is not a sign of things to come—it's business as usual for the consistent rookie, who has now catapulted himself into a reliable No. 2 fantasy back in all formats. 

Follow B/R's Chris Roling on Twitter for more news and analysis @Chris_Roling