Yes, The Open Championship is classed as a PGA Tour event. And yes, it is one of the 4 mens majors.
1995
Tallahassee Open - Nationwide Tour event - ended in 1996.
Tallahassee Open - Nationwide Tour event - was created in 1995.
Fort Wayne Open - PGA Tour event - ended in 1956.
Fort Wayne Open - PGA Tour event - was created in 1950.
Tour de France would be a major cycling event
Dew Tour
Tour De france
No. The Master is one of the Four majors played on the PGA Tour (British Open, US Open, PGA, and Master's), and is open to players of all ages who have qualified either by winning an event the year of the Master or are on the leading money list in other countries and all previous Master's Champions are allowed to played. The Champions (Senior) Tour is for Players 50 and over who must qualify to play in the events on this tour..
The Masters, US Open, The Open and USPGA Championship.
At club level, the head greens keeper. In a tour event, the competition committee. In the US Open, the USGA. In The Open, the R&A.
Florida Classic - Nationwide Tour event - ended in 2001.