Absolutely. Ken Griffey Jr. and Ken Griffey Sr. played together in 1990 for the Seattle Mariners. They once hit back to back home runs in a game.
They played about a month together (8/31 to the end of the season).
In Hockey, Gordie Howe played ...
I realise it's not father and son, but Paul Elvstrøm sailed with his daughter Trine. They won the 1983/4 European Tornado Championships, were 4th in the 1984 Los Angeles Olympics, and 15th at the 1988 Seoul Olympics.
Yes. Three NHL players have done this:
Geordie Howe: inducted 1972, last played in the NHL in the 1979-80 season.
Guy Lafleur: inducted 1988, last played in the NHL in the 1990-91 season.
Mario Lemieux: inducted 1997, last played in the NHL in the 2005-06 season.
In terms of your question, it's worth noting that both Howe and Lemieux were inducted into the ...
The answer to why all the U.S. professional teams are named this way (Location Nickname) today is because it is tradition. Baseball teams were named this way, and football, basketball, hockey, and soccer (in the U.S.) all came after baseball.
Baseball teams weren't always named this way, however. The National Association of Professional Base Ball Players ...
In (international) football: Eiður and Arnór Gudjohnsen.
On 24 April 1996, he and his father entered football history in an Iceland international friendly in Tallinn. Arnór started the match, and Eiður came on in the second half as a substitute for his father.
I don't know if car racing meets the definition of a sport in the OP's question, but there have been some contemporaneous fathers and sons in car racing. Perhaps the most famous is Dale Earnhardt Sr. and Jr. They were in the same race when Earnhardt Sr. died.
In most places in the world there is a considerable amount of space between different competing teams in the same league. The naming convention used in the US is not just the US but is also many/most sports teams in the world. I played a little basketball in France and yes all of the teams use that convention, albeit with more emphasis on the city name.
Jackie Robinson's number 42 was retired by the MLB. Those wearing 42 were allowed to continue, but players couldn't switch to it and new players couldn't have it. Mariano Rivera was the last player to wear 42 in the MLB.
Robinson played for the Brooklyn Dodgers starting in 1947 and famously broke the color barrier in the MLB. He was a first ballot hall of ...
This weekend 55 year old Dave Beasant was included on the bench for Stevenage FC as a second choice goalkeeper, in place of his injured son Sam who is also a Stevenage goalkeeper. So they will never appear in the same team, or even in the same squad, but are both currently 'active' players for their club.
In short, YES
Several examples with detail:
NFL: (source) . All of these were because of trades and extra bye-week game scheduling.
Frank Taveras played 11 for the Pittsburgh Pirates and 153 for the NY Mets in 1979.
Willie Montanezin 1976 played 60 games for the SF Giants and 103 games for the Atlanta Braves.
(not via a trade but ...
Italian basketball legend Dino Meneghin played against his 16-year-old son Andrea in 1990, in a game of the top professional Italian league. He was 40 at the time.
Source: Dino Meneghin, the eternal champion.
It's actually fairly common in U.S. auto racing; teams in those sports are often family owned and passed down between generations.
Lee Petty raced against two of his sons, Richard and Maurice, in the same NASCAR race in 1960.
Mario Andretti raced alongside his son Michael in the CART Indy Car series for 8 years, from Michael's rookie year in 1984 (Mario ...
In 1994 the Baltimore Stallions made it to the Grey Cup finals, in their inaugural year, making them the most successful American team in CFL history. Despite not winning the 1994 Grey cup, they lost by 3 points to the BC Lions, they went on to win the Grey cup in 1995 against Calgary Stampeders
Chicago Fire Soccer Club:
In 1998 the ...
This, from MLB.com on October 30, 2019:
The Nationals’ season-saving 7-2 victory over the Astros in Game 6 on Tuesday night made road teams a perfect 6-0 in this year’s Fall Classic. It’s the first World Series in which the road team has won each of the first six games, and it’s also the first time in 1,420 best-of-seven postseason series across MLB, NBA ...
The North American examples certainly aren't unique.
Monaco has teams in the French systems for various sports, including both football (Ligue 1) and volleyball.
A number of examples in the UK football systems:
The Welsh Cardiff City, Swansea City and Wrexham play in the English system.
The English Berwick Rangers play in the Scottish system.
The New ...
In motorsports, Jan Magnussen is still an active competitive driver in Danish touring cars while his son Kevin drives for McLaren in Formula 1. This may not count since they are very different series.
Martin Brundle and his son Alex Brundle competed in the same team, Greaves Motorsport, driving at the 24 hours of Le Mans in 2012:
Gordie Howe came out of retirement to play with his sons, Mark and Marty Howe, when the WHA came into being. After the WHA merged with the NHL, Mark and Gordie played together with the Hartford Whalers for one season.
Sources: Gordie Howe, Mark Howe
Do you have a reference or a screenshot?
F/10 or F/11 is only commonly used for baseball (MLB) scores. In that case it indicates the game is over (game is "F"inal), and that rather than the regulation 9 innings, additional innings were played (10 or 11). I can't think of any reason you would see this terminology with WNBA or MLS scores. Overtime for ...
In 1949 The AAFC(All-American Football Conference) closed it's doors or went bankrupt and the NFL invited the Browns, and 2 others, into their league in 1950. In the Browns first Season they went 10-2 and beat the LA Rams(on a last minute field goal) 30-28 to win their first of four National Football League championships. While not truly an "expansion" team ...
It's hard to tell without a screenshot in question, but likely refers to Monday. As in F/10 MON, would mean the baseball game final score in ten innings is for Monday's game. This might appear Tuesday afternoon, when it's possible for a game to have started, but they are still showing yesterday's results. You might also see this in the playoffs, when they ...
For the 1967-68 season, the NHL expanded from 6 to 12 teams. All the new teams were grouped in the West Division. The division champions were the Montreal Canadiens (original 6) and the St. Louis Blues (expansion team). The Canadiens won the Stanley Cup Finals 4-0.
The 1973-4 Flyers were the first of the expansion teams to win the Cup.
The rookie status varies between different sports.
In the MLB:
Determining rookie status:
A player shall be considered a rookie unless, during a previous season or seasons, he has (a) exceeded 130
at-bats or 50 innings pitched in the Major Leagues; or (b) accumulated
more than 45 days on the active roster of a Major League club or clubs
Conrad Harrison and his son Dean Harrison both won TT titles in the same week.
According to Wikipedia:
With his father Conrad Harrison winning the Sidecar Race 1 and Dean Harrison's Lightweight win this was the first occasion of father/son winners in different classes during the same race week.
Also in curling is possible to find some matches where father and son play in the same match:
On this article from Milwakee Journal (date 27 feb 1937!) there is the news where in two matches there where fathers and sons: George La Marre played versus his sons William, Edwards and Charles and on another rink Lachman MacDonald played with his son Bruce