Tiger Woods vowed he would "keep fighting" after missing the cut at this year's PGA Championship. (More Golf News)
The four-time champion will be absent from the weekend at the second major of the season, having carded rounds of 72 and 77 in Valhalla.
Woods concluded his opening round with a bogey-bogey finish, while he hit two triple-bogeys in the first four holes of his second round - doing so multiple times in a single round at a major for the first time.
The 48-year-old, who finished seven over par and 19 strokes behind halfway leader Xander Schauffele, was making his first appearance on the PGA Tour since last month's Masters, and knows he needs to improve ahead of the US Open at Pinehurst in four weeks' time.
When asked about his next steps, the 15-time major champion responded: "Just keep fighting. Keep the pedal on, keep fighting, keep grinding, keep working hard at posting the best score that I can possibly post. That's all I can do.
"I got off to a bad start [in the second round] and the rough grabbed me at [the second hole]. I compounded the problem there at [the fourth].
"[I] just kept making mistakes and things you can't do, not just in tournaments but in majors especially. I hung around for most of the day, but unfortunately, the damage was done early.
"I need to play more. Unfortunately, I just haven't played a whole lot of tournaments. Hopefully, everything will somehow come together in my practice sessions at home and be ready for Pinehurst."
