Team season home run records progressive.

Pete Alonso set the Met record tonight.

Pete Alonso will be 10th rookie to set team home run record. Monday, August 19, 2019

Below are the three most recent season home run record holders for each team (franchise) sorted by the number of years they've held the record to 2019. The original teams are at the top. Click this link to view record holders going back to the early 1900s.

Bold: players who had the record with multiple teams.

Red: rookies.

Updated 5/15/20 for Alonso and Soler.

Team	Player	HR	Year	Years	Team	Player	HR	Year	Years	Team	Player	HR	Year	Years
As	Jimmie Foxx	37-58	1930	90	As	Tillie Walker	17-37	1920	10	As	Socks Seybold	16	1902	18
Tigers	Hank Greenberg	26-58	1934	86	Tigers	Dale Alexander	24	1929	5	Tigers	Harry Heilmann	19-21	1921	8
Pirates	Ralph Kiner	23-54	1946	74	Pirates	Johnny Rizzo	23	1938	8	Pirates	Arky Vaughan	19	1935	3
Twins	Harmon Killebrew	42-49	1959	61	Twins	Roy Sievers	24-42	1954	5	Twins	Jim Lemon	27	1956	1
Yankees	Roger Maris	61	1961	59	Yankees	Babe Ruth	54-60	1920	41	Yankees	Wally Pipp	12	1916	4
Reds	George Foster	52	1977	43	Reds	Ted Kluszewski	49	1954	23	Reds	Hank Sauer	35	1948	6
Cardinals	Mark McGwire	70	1998	22	Cardinals	Johnny Mize	43	1940	58	Cardinals	Rogers Hornsby	21-42	1921	19
Cubs	Sammy Sosa	66	1998	22	Cubs	Hack Wilson	30-56	1927	71	Cubs	Rogers Hornsby	39	1929	1
White Sox	Albert Belle	49	1998	22	White Sox	Frank Thomas	41	1993	5	White Sox	Carlton Fisk	37	1985	8
Giants	Barry Bonds	73	2001	19	Giants	Willie Mays	51-52	1955	46	Giants	Johnny Mize	51	1947	18
Dodgers	Shawn Green	49	2001	19	Dodgers	Gary Sheffield	43	2000	1	Dodgers	Duke Snider	42-43	1953	47
Indians	Jim Thome	52	2002	18	Indians	Albert Belle	50	1995	7	Indians	Al Rosen	43	1953	42
Braves	Andrew Jones	51	2005	15	Braves	Hank Aaron	47	1971	34	Braves	Eddie Mathews	47	1953	52
Red Sox	David Ortiz	54	2006	14	Red Sox	Jimmie Foxx	50	1938	68	Red Sox	Babe Ruth	29	1919	19
Phillies	Ryan Howard	58	2006	14	Phillies	Mike Schmidt	45-48	1979	27	Phillies	Chuck Klein	43	1929	50
Orioles	Chris Davis	53	2013	7	Orioles	Brady Anderson	50	1996	17	Orioles	Frank Robinson	49	1966	30
Mariners	Ken Griffey	45-56	1993	27	Mariners	Gorman Thomas	32	1985	8	Mariners	Willie Horton	29	1979	6
Astros	Jeff Bagwell	39-47	1994	26	Astros	Jim Wynn	37	1967	27	Astros	Roman Mejias	24	1962	5
Padres	Greg Vaughn	50	1998	22	Padres	Ken Caminiti	40	1996	2	Padres	Nate Colbert	24-38	1969	27
Angels	Troy Glaus	47	2000	20	Angels	Reggie Jackson	39	1982	18	Angels	Bobby Bonds	37	1977	5
Rangers	Alex Rodriguez	52-57	2001	19	Rangers	Frank Howard	36-48	1967	34	Rangers	Don Lock	27-28	1963	4
D'Backs	Luis Gonzalez	57	2001	19	D'Backs	Jay Bell	38	1999	2	D'Backs	Travis Lee	22	1998	1
Rockies	Todd Helton	49	2001	19	Rockies	Larry Walker	49	1997	4	Rockies	Andres Galarraga	47	1996	1
Nationals	Alfonso Soriano	46	2006	14	Nationals	Vladimir Guerrero	38-44	1998	8	Nationals	Henry Rodriguez	36	1996	2
Brewers	Prince Fielder	50	2007	13	Brewers	Richie Sexson	45	2001	6	Brewers	Gorman Thomas	45	1979	28
Rays	Carlos Pena	46	2007	13	Rays	Aubrey Huff	34	2003	4	Rays	Jose Canseco	34	1999	8
Blue Jays	Jose Bautista	54	2010	10	Blue Jays	George Bell	47	1987	23	Blue Jays	Jesse Barfield	40	1986	1
Royals	Jose Soler	48	2019	1	Royals	Mike Moustakas	38	2017	3	Royals	Steve Balboni	36	1985	35
Marlins	Giancarlo Stanton	59	2017	3	Marlins	Gary Sheffield	42	1996	24	Marlins	Gary Sheffield	27	1994	2
Mets	Pete Alonso	53	2019	1	Mets	Carlos Beltran	41	2004	16	Mets	Todd Hundley	41	1996	24
Team	Player	HR	Year	Years	Team	Player	HR	Year	Years	Team	Player	HR	Year	Years

Check out Rogers Hornsby in the linked file and below:

Season Home Run record by team progressive. Saturday, December 14, 2013

Rogers Hornsby held the season home run (HR) record for four different teams, three concurrently.  Checking data since 1901, I could not find another player who had records for more than two teams.  Multiple team record holders are in bold below. Red bold means a rookie set the team record...

Hornsby held the record with:
Cardinals 21-42 1921-1939; broken by Johnny Mize 43
Giants 26 1927-1928; broken by Mel Ott 42
Braves 21 1928-1929; broken by Wally Berger 38
Cubs 39 1929 tied with Hack Wilson; broken by Hack Wilson 56

In 1928 Hornsby held the record concurrently with the Cardinals, Giants, Braves.

In 1929 Hornsby held the record concurrently with the Cardinals, Braves, Cubs.

The great Hornsby changed teams three consecutive seasons and set the new team's season HR record all three times.
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