Willis has set a career high with 6.0 sacks this season. He has continued to excel and at times dominate against the run even after suffering a broken hand. I thought Willis was the best player on the field against St. Louis on Sunday.
Beyond Willis, however, it's tougher to make a case for NFC West players as the NFL prepares to reveal Pro Bowl rosters at 7 p.m. ET.
A quick look at each position in advance of the announcement (and let me know who should be on here):
The Rams' Chris Long and James Hall have consistently harassed opposing quarterbacks. They have combined for 18.5 sacks this season. Seattle's Chris Clemons has 10.5 sacks. Arizona's Darnell Dockett and San Francisco's Justin Smith earned Pro Bowl honors last season. Sacks tend to win out in this category and NFC West leaders rank down the list within the conference. Fred Robbins has played well for the Rams.
Willis is an obvious choice. The Rams' James Laurinaitis is having a good season, but he is not as dominant physically.
The Cardinals' Adrian Wilson and Dominique Rodgers-Cromartie were Pro Bowl choices last season. Neither has played to expectations this season, but Wilson has a good chance. Cardinals free safety Kerry Rhodes has four interceptions and two fumble returns for touchdowns, but Arizona's defense has struggled.
Frank Gore's injury removed him from consideration. The Rams' Steven Jackson ranks third among NFC players in rushing yards, but no other player among the top 12 rushers in the conference is averaging fewer than 4.1 yards per attempt. Jackson is averaging 3.7.
I can't think of an offensive lineman in the division playing at that level consistently.
Larry Fitzgerald is the only potential candidate in the division, but he doesn't have the numbers or team production to qualify as an automatic selection. It's a tribute to the respect he enjoys around the league if he makes it, but Greg Jennings, Roddy White, Calvin Johnson and DeSean Jackson might have the edge.
The 49ers' Vernon Davis made it last season. Five NFC tight ends have more receptions than Davis this season. Only the Dallas Cowboys' Jason Witten has more yards and touchdowns. Both made it last season.
Seattle's Leon Washington leads the NFC with three kickoff returns for touchdowns. He ranks fourth in yards per kickoff return. Arizona's LaRod Stephens-Howling has two kickoff returns for touchdowns while ranking third in yards per return. But with Chicago's Devin Hester leading the league in punt-return average and punt returns for touchdowns, he'll be the natural choice.
The Rams' Josh Brown leads the NFC in field goals with 31.
Arizona's Jay Feely made a strong case with a 25-point game against Denver.