Street has been the best at closing 2012-2013, by far.

[AztecBill]

There were a lot of folks upset that the Padres traded an old Bell for a new Street. Things couldn't have worked out better for the Padres. Only 2 blown saves over the past 2 years while saving 53 games is by far the best save percentage in baseball.

PLAYER	TEAM	2013 S	2013 BS	2012 S	2012 BS	2 yr Saves	2yr BS	Save%
Huston Street	SD	30	1	23	1	53	2	96.4%
Grant Balfour	OAK	38	2	24	2	62	4	93.9%
Joe Nathan	TEX	39	2	37	3	76	5	93.8%
Craig Kimbrel	ATL	47	3	42	3	89	6	93.7%
Casey Janssen	TOR	30	2	22	3	52	5	91.2%
Sergio Romo	SF	35	4	14	1	49	5	90.7%
Greg Holland	KC	43	3	16	4	59	7	89.4%
Rafael Soriano	WSH	41	6	42	4	83	10	89.2%
Fernando Rodney	TB	35	8	48	2	83	10	89.2%
Ernesto Frieri	LAA	34	4	23	3	57	7	89.1%
Jim Johnson	BAL	45	9	51	3	96	12	88.9%
Chris Perez	CLE	24	4	39	4	63	8	88.7%
Steve Cishek	MIA	30	2	15	4	45	6	88.2%
Aroldis Chapman	CIN	36	5	38	5	74	10	88.1%
Addison Reed	CHW	37	6	29	4	66	10	86.8%
Jason Grilli	PIT	30	2	2	3	32	5	86.5%
Kevin Gregg	CHC	32	5	0	0	32	5	86.5%
Glen Perkins	MIN	35	4	16	4	51	8	86.4%
Mariano Rivera	NYY	43	7	5	1	48	8	85.7%
Jonathan Papelbon	PHI	27	7	38	4	65	11	85.5%
Tom Wilhelmsen	SEA	24	5	29	5	53	10	84.1%
Kenley Jansen	LAD	25	4	25	7	50	11	82.0%
Edward Mujica	STL	36	3	2	6	38	9	80.9%
Jim Henderson	MIL	25	4	3	4	28	8	77.8%
Bobby Parnell	NYM	22	4	7	5	29	9	76.3%

Note: The list is unfair to some of the pitchers lower on the list because they weren't closers in 2012. Not being a closer gives you a chance of a blown save while not giving you a chance to actually save the game. They scews blown save percentage for those players - like Mujica.