He has good games not so good games. Why judge his ability to play for us, when he is playing injured? Here is a recent article from the Wall Street Journal about his play which statistically says he is doing some things good for the Knicks.
"With point guard Raymond Felton currently eighth in the league in court time and looking more and more weary by the day, Knicks fans may be imploring their team to find someone to take over some of those mounting minutes.
But if the performance of the team is the best indication, a suitable option is already on the roster. Toney Douglas may be an unconventional point guard (just 3.5 assists per 36 minutes), but he's effective. When the team is helmed by Mr. Douglas, it has outscored opponents 103-95 when measured on a per 48-minute scale that equates to a NBA game.
Mr. Douglas has a reputation for being a better on-the-ball defender than Mr. Felton. And there's supporting evidence of that in our numbers—opponents average 12 fewer points per 48 minutes when Mr. Douglas is quarterbacking the Knicks compared to Mr. Felton's time on court. Additionally Mr. Douglas's turnover rate is about half of Mr. Felton's and his paltry rate of assists suggest he's a poor distributor. But Mr. Douglas has played with 61 different combinations of players (excluding those with Mr. Felton). And he hasn't logged more than 26 minutes with any of them. That's hardly a formula for fostering basketball chemistry.
Mr. Felton is averaging 38.7 minutes per game—more than any other pure point guard. His shooting percentage by month is steadily declining (to .373 in January). It's possible that the apparent defensive advantage of Mr. Douglas results from him being able to play full speed while Mr. Felton must pace himself. Subtracting a few minutes of Mr. Felton's court time may allow him to get back to his early-season form—especially considering the Knicks seemingly lose nothing when he's on the bench. "
I also think your sense of urgency about our needing a backup point guard immediately, ignores that February will be dominated by Carmelo Anthony's situation. The Knicks are highly unlikely to make any other moves which might take their focus away from snagging Melo.