The ATP Masters series 1000 is the premier event in Men's tennis after the 4 Grand Slams.
1000 signifies the ranking points earned by the winner.
There are a total of 9 Masters 1000 events throughout the year. But they are either played on hard or clay courts.
Wimbledon, which is played on grass court, is considered to be the most prestigious event in Tennis. The Grandest Slam among Grand Slams.
So why is there no Masters 1000 event on grass courts either between French Open & Wimbledon or after Wimbledon?
It makes sense to not schedule the event between the 2 week gap from French Open to Wimbledon. But why not afterwords. Also, why not extend the gap to 3 weeks & schedule an event in between.
The only notable events leading up to Wimbledon are in Queen's Club in London & Gerry Webber Open in Germany, which are Masters 500 & 250 respectively with Nadal/Murray & Federer/Djokovic respectively participating
Similar is the case for WTA also.