Gianluigi Donnarumma has made the most career appearances by a player younger than 20 in Serie A, with 131 appearances.

most apearances before turning 20 years old by a player

	NAME	M	MIN	START	G	G/M	A	G+A	PK	FK	SH	SOT	WOOD	TCH	TCH-BOX	OFF
1	Gianluigi Donnarumma G. Donnarumma	131	11,719	131	0	0.00	0	0	0	0	1	1	0	5,080	1	0
2	Gianni Rivera G. Rivera	109	9,810	109	32	0.29			1
3	Silvio Piola S. Piola	101	9,000	101	36	0.36			0
4	Gino Colaussi G. Colaussi	93	8,370	93	10	0.11			0
5	Roberto Mancini R. Mancini	90	6,988	78	22	0.24			1
6	Paolo Maldini P. Maldini	83	7,402	82	3	0.04			0
7	Nereo Rocco N. Rocco	82	7,380	82	11	0.13			0
8	Mario Corso M. Corso	80	7,155	80	21	0.26			0
9	Giuseppe Bergomi G. Bergomi	75	6,520	74	3	0.04			0
10	Valeri Bozhinov V. Bozhinov	74	3,823	46	18	0.24			0
11	Pietro Ferraris P. Ferraris	72	6,435	72	19	0.26			0
12	Vincenzo Esposito V. Esposito	71	5,396	63	3	0.04			0
13	Bruno Nicolè B. Nicolè	71	6,390	71	20	0.28			0
14	Antonio Cassano A. Cassano	70	3,906	37	11	0.16			0
15	Renato Buso R. Buso	67	3,752	39	11	0.16			0
16	Giorgio Scalvini G. Scalvini	64	4,188	51	3	0.05	2	5	0	0	43	11	3	3,327	80	8
17	Giuseppe Virgili G. Virgili	64	5,760	64	25	0.39			1
18	Onesto Silano O. Silano	63	5,640	63	14	0.22			0
19	Christian Obodo C. Obodo	62	4,545	51	1	0.02			0
20	Paolo Pestrin P. Pestrin	62	5,580	62	7	0.11			0
21	Giancarlo Bacci G. Bacci	62	5,535	62	17	0.27			2
22	Duilio Setti D. Setti	62	5,580	62	0	0.00			0
23	Kenan Yıldız K. Yıldız	60	3,171	35	8	0.13	2	10	0	0	75	28	1	2,013	137	5
24	Francesco Totti F. Totti	60	3,124	33	6	0.10			0
25	Marino Perani M. Perani	60	5,400	60	10	0.17			1