The following is a list of notable events and developments that are related to Philippine sports in 2018.
Events
Athletics
December 9 — The 42nd National Milo Marathon National Finals to be held in Laoag City
Basketball
3x3
June 8–12 – The 2018 FIBA 3x3 World Cup was hosted at the Philippine Arena in Bocaue, Bulacan.
Amateur
Professional
January 25 – The inauguration of the Maharlika Pilipinas Basketball League were held at the Smart Araneta Coliseum in Quezon City. March 12 – The Senate Defenders bagged the first championship title of the UNTV Cup Season 6 after they won against Malacañang-PSC Kamao in the Game 2 of the Finals series at Smart Araneta Coliseum, Quezon City, 84–64. Senate Defenders won the ₱4 million cash prize for their chosen beneficiary April 6 – The San Miguel Beermen claims the 2017–18 PBA Philippine Cup title after beating the Magnolia Hotshots in 2OT, 4–1 in the Finals. and June Mar Fajardo named as PBA Finals MVP. April 19 – The Batangas Tanduay Athletics defeat the Muntinlupa Cagers, 68–66, in Game 4 of the 2018 MPBL Anta Rajah Cup Finals, also to win the series, 3–1, to be crowned as the league's first inaugural champions. May 3 – The San Miguel Alab Pilipinas pulled off a rare five-game sweep after outclassing Mono Vampire, 102–92, in the 2018 ABL Finals at Sta. Rosa Multi-Purpose Complex, Santa Rosa, Laguna. May 28 – NLEX rookie Kiefer Ravena has been suspended by FIBA for 18 months after he shockingly tested positive for three banned substances. June 12 – The 2018–19 MPBL Datu Cup officially opens at the Smart Araneta Coliseum, in Quezon City. 26 teams including sixteen new expansion teams will compete in the tournament. August 8 – The Barangay Ginebra San Miguel were crowned as the champions of the 2018 PBA Commissioner's Cup Finals after beating San Miguel Beermen in the Game 6 of the finals series, 93–77. Scottie Thompson was crowned as the Finals MVP August 25 – The Inauguration of the National Basketball League, an amateur basketball league was opened. December 8 – The Parañaque Aces defeat the Dasmariñas Ballers Club, in Game 2 of the NBL Finals, also win the series, 2–0, to be crowned as the first inaugural champions. December 16 – CJ Perez from LPU Pirates, was picked as the first overall selection from the Columbian Dyip in the 2018 PBA Rookie Draft at the Robinsons Place Manila. December 19 — the Magnolia Hotshots defeat the Alaska Aces in six games to win the 2018 PBA Governors' Cup title. Mark Barroca was named finals MVP
Collegiate
March 2 – The Ateneo Blue Eaglets won their second championship in 3 years in the UAAP Season 80 Junior's Basketball. Finals MVP is Kyle Zachary Sotto and the Blue Eaglets won their school's 19th UAAP juniors title. November 12 – The San Beda Red Lions are the kings of NCAA men's seniors basketball for the third straight year after defeating Lyceum Pirates in Game 2, 71–56, at the Mall of Asia Arena in Pasay. December 5 – The Ateneo Blue Eagles were crowned the UAAP Season 81 men's basketball champions after clinching a 99–81 against the UP Fighting Maroons in a Game 2 for the 2nd straight title at the Smart Araneta Coliseum.
Exhibition
National team
July 2 – A bench-clearing brawl broke out between the Australia and Philippines men's national basketball teams during the 2019 FIBA Basketball World Cup qualifier in Bocaue. With Australia leading by over 30 points with just over 4:00 left in the third quarter, play was halted for a foul. Australia's Daniel Kickert then swung his elbow at Roger Pogoy, immediately leading to both benches clearing and a melee spreading from the bench to one of the baskets. When order was restored and game officials reviewed video of the incident, a total of 13 players were ejected—four from Australia (including Kickert) and nine from the Philippines. This left the hosts with only three players to resume the game; after two of the remaining Philippines players fouled out, leaving that team with only one player, the officials called the game, with Australia winning 89–53. July 19 – Ten Gilas Pilipinas players got suspended from international play for figuring in the infamous brawl that marred the FIBA World Cup Asia qualifier match between the Philippines and Australia last July 2 at the Philippine Arena.
Women's basketball
Baseball
March 16 – The Adamson Soaring Falcons beating the De La Salle Green Batters in the finals of UAAP Season 80 baseball tournament marking the twelfth championship title.