Roger Federer's 65 consecutive Grand Slam tournaments (2001 US Open - 2016 Australian Open) was indeed a record at the time of posting this question. Since then he was surpassed by Feliciano López, currently at 71 (2002 French Open - 2019 US Open) and Fernando Verdasco currently at 66 (2003 Wimbledon - 2019 US Open).
You should be able to find a list which ...
Simply by checking List of ATP number 1 ranked singles players at Wikipedia I found two players who were Year-end No. 1 without winning a Grand Slam tournament that year:
Jimmy Connors in 1975 and 1977
John McEnroe in 1982
(Connors won his first GS title in 1974 and McEnroe in 1979. But they did not won any GS in the years listed above. Note that ...
Since the Open Era began in 1968, and until 2013, this only happened in 1969.
That year, Rod Laver (born 1938) won the Grand Slam, which means he won all of them: Wimbledon, Australian Open, Roland Garros and US Open.
I got to this result by parsing the results in Age of Grand Slam Winners - Open Era and completing those with List of List of ...
Despite the difficulty this event had already occurred several times in the past: 9 times for men events and 40 times in women events in modern era.
men records for modern era:
Bjorn Borg and Rafael Nadal take this achievement 3 times each
Bjorn Borg in 1976 Wimbledon and Rafael Nadal in 2017 Roland Garros were the lowest ranking (4th) player to win a ...
It has to do with the tournament trying to keep competitive balanced opponents for as long as possible throughout the duration of the tournament. It's the same reason why the tournament distributes seeded players evenly into the draw to begin with so that they avoid high-profile matches until the later rounds of the tournament.
Related: See my answer about ...
As of August 2020 this is the list of last tennis players who won grand slam championships on home soil:
Australian Open: Mark Edmondson - 1976
French Open: Yannick Noah - 1983
Wimbledon: Andy Murray - 2016
US Open: Andy Roddick - 2003
Australian Open: Chris O'Neil - 1978
French Open: Mary Pierce - 2000
Wimbledon: Virginia Wade - 1977
There is an answer summarizing the situation at the time when the question was posted. Here is a CW answer which can be updated when there are more players with No. 1 position without Grand Slam title.
Year-end No. 1 without Grand Slam title in the same year
See also the list on Wikipedia (revision from 2019).
Jimmy Connors in 1975 and 1977
John McEnroe ...
According to tennisabstract data, Björn Borg holds the male record in winning 5 set matches in a row. He won 13 over the course of 1976 to 1980.
Patrick Rafter won 12 in a row between 1995 and 2000 if we ignore losses by RET. If we do not ignore these, he won 11 in a row.
Lleyton Hewitt won 10 in a row between 2003 and 2006.
The following players won 9 at ...
Yes, random allocation.
See the following section in the official ITF Grand Slam rulebook (note that Wild Cards may be seeded):
Z. ENTRY PROCEDURES / 2. Singles Main Draw / g. Method of Draw
g. Method of Draw
A draw sheet for 128 places will be used. The placement
of seeds as heretofore provided. The remaining players, including ...
For male players (only champions that played 7 full matches (no retirements or walkovers) are considered). data is by Jeff Sackmann, but it's not entirely complete. Time (last column) is in minutes.
No qualifier to one of the four major championships singles main draw has ever won that year's tournament. The farthest a qualifier has reached at a major is the semifinals with John McEnroe reaching the 1977 Wimbledon Semifinals as a qualifier. Other qualifiers to reach grand slam semifinals are Filip Dewulf at the 1997 French Open and Vladimir Voltchkov at ...
Considering only the schedule of the matches is it possible to win the Triple Crown
There are several examples of schedule modified to give the possibility to tennis players to play in two different draw. Is it possible to see from the Isner-Mahut played in Wimbledon 2010 where both double matches were postponed because of the duration of the single match.