Here’s a list of the longest active streaks of 20-point games in the regular season:

Rk	Player	Streak	Streak Started	Streak Ended	Active
1	Donovan Mitchell	21	2023-03-10	2023-11-15	*
2	Stephen Curry	21	2023-03-20	2023-11-12	*
3	Joel Embiid	18	2023-03-24	2023-11-15	*
4	Nikola Jokic	11	2023-10-24	2023-11-14	*
5	Kevin Durant	10	2023-10-26	2023-11-15	*
6	Tyrese Maxey	7	2023-11-04	2023-11-15	*
7	Shai Gilgeous-Alexander	7	2023-10-30	2023-11-14	*
8	Lauri Markkanen	6	2023-11-02	2023-11-14	*

(Link to table)

In Cavs history, here are the longest streaks of 20-point games:

Rk	Player	Team	Streak	Streak Started	Streak Ended	Active
1	LeBron James	CLE	49	2007-12-14	2008-03-26
2	Donovan Mitchell	CLE	21	2023-03-10	2023-11-15	*
3	Kyrie Irving	CLE	21	2017-02-06	2017-03-25
4	LeBron James	CLE	21	2010-01-29	2010-03-19
5	LeBron James	CLE	20	2005-03-28	2005-11-09

(Link to table)

For historical purposes, here are the all-time longest streaks of 20-point games:

Rk	Player	StreakV	Streak Started	Streak Ended
1	Wilt Chamberlain	126	1961-10-19	1963-01-19
2	Wilt Chamberlain	92	1963-02-26	1964-03-18
3	Oscar Robertson	79	1963-10-22	1964-10-20
4	Kevin Durant	72	2015-11-23	2016-11-09
5	Michael Jordan	72	1987-12-29	1988-12-06
6	Kareem Abdul-Jabbar	71	1971-11-21	1972-11-08
7	Kareem Abdul-Jabbar	70	1970-02-06	1971-01-20
8	Michael Jordan	69	1990-11-24	1991-04-19
9	Elgin Baylor	64	1961-02-16	1962-10-23
10	Kobe Bryant	63	2005-12-09	2006-11-03

(Link to table)