The new kids on their 封鎖するs at the Tokyo Games
Rehearsing for their debut: Serbia's 3x3 basketball squad training in Novi Sad in June for the Olympics
While the Olympics 強調 their history, they also try to refresh the programme to broaden the 控訴，上告, 含む sports that are popular in host nations and to 反映する changing 態度s.
The International Olympic 委員会 has said it wants to 促進する "青年-oriented sports" and make "gender equality a big 焦点（を合わせる） for Tokyo".
The Games will 含む six sports that were not on the programme in Rio 同様に as 追加するing four fresh disciplines in 存在するing sports and a string of mixed events in 伝統的な sports.
Two of those 後継の sports, baseball and softball, are hardly new to the Olympics. Baseball made its first 外見 in 1904 in St. Louis, softball in 1996. Both were dropped in 2008, 犠牲者s of the constant 戦う／戦い to 支配（する）／統制する the number of competitors at the Games.
A change in approach by the IOC, 目的（とする）d at 増加するing the number of sports from Tokyo onwards, 緩和するd the way for baseball and softball to return.
全体にわたる, Tokyo will 申し込む／申し出 more sports 同様に as more chances to 勝利，勝つ gold, with a 記録，記録的な／記録する 339 メダル events.
Yet, while the IOC 予報するs that a 記録，記録的な／記録する 11,091 競技者s will take part, some sports, 特に the newcomers, have small 配分s.
There will be just 18 BMX 自由型 competitors, 40 surfers and 16 four-member 3x3 basketball teams.
Four sports make their Olympic debuts in Tokyo.
SKATEBOARDING
Ready to roll: Sota Tsuji of Japan competing in a 実験（する） event at the Olympic skateboarding 発生地 in May
As part of the 試みる／企てる to 誘惑する in a younger audience, skateboarding follows snowboarding, which was 追加するd to the Winter Olympic programme in 1998.
反映するing the sport's roots, there will be park and street events. Park skateboarding will take place in a bowl and 強調 flow and tricks. The street 競争 will run over a course that 含む street 障害s such as stairs and rails.
SURFING
The wave riders will take the Olympic 急落（する），激減（する） at Tsurigasaki Beach, 100 kilometres west of Tokyo on the 太平洋の coast. The event will open with 30-minute heats in which four or five surfers 戦う／戦い for 頂点（に達する）s of 約束ing waves and 結論する with a 一連の two-competitor 一連の会議、交渉／完成するs. While 競争 is 予定 to start on July 25 and run for four days, the dates are fluid to 許す organisers to wait for better waves.
SPORT CLIMBING
Reaching for the 最高の，を越す: Christopher Cosser of South Africa training in Johannesburg for the Olympic 玉石ing event
Rope climbing was part of the 体操 programme at the first modern Olympics in Athens in 1896, it last appea red in 1932 and clambers 支援する in a very different 判型 and as a separate sport.
The 競争 will be held on three 特に built 塀で囲むs, two of 15m 側面に位置するing one of 4.5m, at the Aomi 都市の Sports Park. The short 塀で囲む is for 玉石ing, which 伴う／関わるs climbing 直す／買収する，八百長をするd 大勝するs. One higher 塀で囲む is for 速度(を上げる） climbing, a two-person race to the 最高の，を越す. The other is for lead, in which 登山者s race the clock.
KARATE
The Japanese sport making its Olympic debut, at the suggestion of the hosts, 発展させるd on the island of Okinawa.
There will be two 競争s.
In kata, individuals 論証する their mastery of 防御の and attacking moves they have chosen from the 102 recognised by the sport. Competitors are 裁判官d on "strength, 速度(を上げる）, rhythm, balance and 力／強力にする of strikes and kicks; the solidity, clarity and 軍隊 of movements; and the proper 表現 of the meaning of each technique with beautiful, flowing 動議".
In kumite, the fighting discipline, 競技者s compete 長，率いる-to-長，率いる in three 負わせる classes.
The 発生地 is the Nippon Budokan, which was built for the 1964 games, where it was home to judo, and in 1970 hosted the first-ever World Karate 選手権s.
CYCLING: FREESTYLE BMX
Hoping to 飛行機で行く: Daichi Teshigahara competes in a BMX 自由型 実験（する） event in Tokyo in May
Trick cycling is also coming to the Olympics with BMX 自由型 joining BMX Racing, which has been part of the Games since 2008.
The sport will use he BMX park 判型. Riders have 60 seconds to 成し遂げる 曲芸 on 障害s such as 塀で囲むs and ramps known as boxes and spines. They are 示すd on difficulty, originality, 死刑執行, 高さ and creativity.
BASKETBALL: 3X3
Like skateboarding, basketball is taking it to the streets in Tokyo with the 新規加入 of men's and women's three-on-three 競争s.
The playground variation is played half 法廷，裁判所 using one basket. Games end when one team reaches 21 points (there are no three pointers) or after 10 minutes.
MIXED TEAM EVENTS
Friendly 解雇する／砲火／射撃: Satoko Yamada (L) and Seiji Morikawa of Japan compete in 10m ピストル 実験（する） event in Tokyo in May
Several 伝統的な sports are mixing up the genders with events in which both men and women compete.
Swimming, 運動競技のs and triathlon are 追加するing mixed relays.
In all three, teams will be made up of two men and two women. In swimming they will compete in a 4x100m medley, in 運動競技のs in a 4x400m relay and triathlon in the shorter sprint 判型.
There will be mixed pairs 競争s in 空気／公表する ピストル, 空気／公表する ライフル銃／探して盗む and 罠（にかける） 狙撃 and in 弓術，射手隊.
Judo will have a team event with three men and three women, from different 負わせる classes, in each team.
（米）棚上げする／（英）提議する Tennis is bringing in mixed （テニスなどの）ダブルス.
