The event program at Tokyo 2020 is going to look quite a bit different than the one last summer in Rio after the IOC’s Executive Board approved a number of changes on Friday.

Looking solely at the sports contested at Rio 2016, the total number of events is increased by 15 (from 306 to 321) but the total number of athletes is reduced by 285 (there were 11,237 in Rio) as the Games move closer to a 50-50 split of male and female participants.

This is in addition to the five sports – baseball/softball, karate, surfing, sport climbing, skateboarding – which were added to the Tokyo 2020 program last year and will feature 18 new events, bringing the overall total to 339.

RELATED: IOC approves five new sports for Tokyo 2020

Laurence Vincent-Lapointe and Katie Vincent in the women’s C-2 200m at ICF Sprint World Cup in Duisburg, Germany, May 23, 2015 (Photo: Balint Vekassy/ICF).

Four sports – canoe/kayak, rowing, shooting, weightlifting – will now have an equal number of events for men and women. Six sports – canoe/kayak, judo, rowing, sailing, shooting, weightlifting – will now have gender balance in the number of athletes competing.

One area in particular that has seen an increase is the number of mixed gender events, doubling the nine that were included at Rio 2016 to 18.

Here is a complete list of the event changes within the current Olympic sports and how the number of athletes will be affected:

Archery

Added: mixed team

This will be the first mixed Olympic event in archery which has had separate gender team events since 1988.

Athletics

Added: mixed 4x400m relay

Reduced: 105 fewer athletes qualified

Basketball

Added: men’s 3×3, women’s 3×3 for a total of 64 athletes (32 men, 32 women)

Eight teams will compete in each tournament. 3×3 basketball was included at the 2010 and 2014 Summer Youth Olympic Games. Later this month, FIBA will hold the fourth edition of its 3×3 World Cup in France.

Boxing

Transfer: two men’s events will become women’s events for a total swap of 44 athletes

At Rio 2016 there were 10 men’s boxing events compared to just three for women. It is still to be confirmed which men’s events will be dropped, but women will now compete in featherweight (57kg) and welterweight (69kg) in addition to flyweight (51kg), lightweight (60kg) and middleweight (75kg).

Canoe/Kayak

Transfer: three men’s events will become women’s events for a total swap of 55 athletes

At Rio 2016, 11 of the 16 events were for men. In Tokyo, there will be K-1 and C-1 events for each gender in slalom. On the sprint side, there will be four kayak events and two canoe events for each gender. These will be the first Olympic Games at which women will compete in canoeing, something that happened for the first time at the Pan Am Games at Toronto 2015.

Cycling (BMX)

Added: men’s freestyle park, women’s freestyle park

To help achieve gender balance across all of cycling, there will be less men and more women qualified in BMX racing, mountain biking and road cycling. The UCI created the BMX Freestyle Park World Cup in 2016.

Cycling (Track)

Added: men’s Madison, women’s Madison

The men’s Madison had previously been on the program from Sydney 2000 to Beijing 2008 while the women’s Madison will make its Olympic debut after being included at the UCI World Championships for the first time in 2017.

Fencing

Added: men’s team, women’s team

Until this change, each Games only included team events in two of the three weapons for each gender, which would alternate from Games to Games.

Judo

Added: mixed team event

Transfer: 38 athletes will be moved from the men’s events to the women’s events to achieve gender balance

Rowing

Team Canada’s Cristy Nurse, Lisa Roman, Ante von Seydlitz, Christine Roper, Lauren Wilkinson, Susanne Grainger, Natalie Mastracci, Caileigh Filmer and Lesley Thompson-Willie in the women’s eight repechage at Lagoa Rowing Stadium, Rio de Janeiro, Brazil, Thursday August 11, 2016. COC Photo/David Jackson

Transfer: one men’s event will become a women’s event

Reduction: 24 fewer athletes qualified

At Rio 2016 there were eight men’s events and six women’s events. At Tokyo 2020 both genders will compete in the same seven events (single sculls, pair, double sculls, four, quad sculls, eight, lightweight double sculls).

Sailing

Transfer: mixed multihull becomes mixed foiling multihull

Reduction: 30 fewer athletes qualified

Shooting

Transfer: three men’s events will become mixed events

Reduction: 30 fewer athletes qualified

At Rio 2016 there were nine men’s events and six women’s events. At Tokyo 2020 there will be mixed team events in 10m air rifle, 10m air pistol and trap. Gone are the men’s double trap, men’s 50m rifle prone, and men’s 50m pistol.

Swimming

Added: men’s 800m freestyle, women’s 1500m freestyle, mixed 4x100m medley relay

Reduced: 22 fewer athletes qualified

Both freestyle events have been included at the FINA World Championships since 2001 and now fully equalize the men’s and women’s race programs. The men’s 800m freestyle addition comes just a little too late for the recently retired Ryan Cochrane who was a three-time world medallist in the event. The mixed 4x100m medley relay made its world championship debut in 2015.

Table Tennis

Added: mixed doubles

From Seoul 1988 to Athens 2004 there were separate doubles events for men and women until they were replaced by team events for each gender.

Triathlon

Added: mixed team relay

The mixed team relay was on the program of the 2010 and 2014 Summer Youth Olympic Games, as well as the most recent Asian Games and Commonwealth Games. It will debut at the Pan Am Games in 2018. Teams of two men and two women will each complete a short-course triathlon (300m swim, 8km bike, 2km run) before tagging off to a teammate.

Water Polo

Added: two women’s teams, increasing tournament field from eight to 10

The men’s tournament remains at 12 teams but team sizes will be reduced, dropping the total number of athletes by 18.

Weightlifting

Reduction: one men’s weight category removed and 64 fewer athletes qualified

At Rio 2016 there were eight men’s events and seven women’s events. It is still to be confirmed what the seven men’s eight categories will be.

Wrestling

Reduction: 56 fewer athletes qualified to achieve gender balance in freestyle wrestling

You can see the complete event program for Tokyo 2020 here.