Mariners rookie George Kirby was rostered in less than one-quarter of CBS leagues last Friday when we highlighted him as a waiver target while it was still unclear what Seattle planned to do with its rotation opening. Kirby ultimately got the call and dominated in his first major-league start, pitching six shutout innings with seven strikeouts and no walks. He's now rostered in 80 percent of CBS leagues, and the window to add him ahead of the rush has slammed shut.

Before you determine which players you should target on the Fantasy baseball waiver wire ahead of Week 7, you NEED to see what R.J. White has to say.

If you're a regular subscriber to SportsLine, you probably know White from dominating NFL picks for years, but did you know he actually got his start in sports media as a fantasy baseball analyst? He even finished No. 1 among all experts for his draft rankings the first year FantasyPros tracked MLB expert accuracy on their site. White has continued to excel at season-long and dynasty Fantasy baseball formats, and this year he's sharing his Fantasy baseball expertise with SportsLine subscribers.

Now, he's revealed the best widely available free agents ahead of Week 7. One player to target on the Week 7 waiver wire: Cardinals second base prospect Nolan Gorman. "The Cardinals surprisingly sent shortstop Paul DeJong down to the minors this week, and the instant reaction by many was that it could be a precursor to Gorman finally getting his major-league shot," White says.

White is also all-in on a barely rostered reliever with MASSIVE upside! You ABSOLUTELY need to see who it is before making any Week 7 waiver wire claims.

So which starting pitchers are worth scooping off the waiver wires in all leagues? And which widely-available players at each position are options to consider in deeper leagues? ... Join SportsLine right now to see R.J. White's waiver wire picks for Week 7, all from a proven Fantasy baseball analyst!