2007!

Items in their inventory when the game ended, across 16 games.

Item	Games	Of all games	Win rate
Arcane Boots	7	43.8%	71.4%
Magic Wand	6	37.5%	66.7%
Blink Dagger	6	37.5%	50.0%
Tranquil Boots	5	31.3%	20.0%
Wind Lace	4	25.0%	50.0%
Force Staff	4	25.0%	25.0%
Ghost Scepter	4	25.0%	25.0%
Sentry Ward	3	18.8%	66.7%
Urn of Shadows	3	18.8%	66.7%
Magic Stick	3	18.8%	33.3%
Yasha and Kaya	2	12.5%	100.0%
Eul's Scepter of Divinity	2	12.5%	100.0%
Power Treads	2	12.5%	50.0%
Observer and Sentry Wards	2	12.5%	50.0%
Essence Distiller	2	12.5%	50.0%
Blade Mail	2	12.5%	50.0%
Glimmer Cape	2	12.5%	0.0%
Dust of Appearance	2	12.5%	0.0%
Radiance	1	6.3%	100.0%
Manta Style	1	6.3%	100.0%
Eye of Skadi	1	6.3%	100.0%
Eaglesong	1	6.3%	100.0%
Aghanim's Scepter	1	6.3%	100.0%
Meteor Hammer	1	6.3%	100.0%
Dagon	1	6.3%	100.0%
Phylactery	1	6.3%	100.0%
Lotus Orb	1	6.3%	100.0%
Phase Boots	1	6.3%	100.0%
Yasha	1	6.3%	100.0%
Null Talisman	1	6.3%	100.0%
Soul Ring	1	6.3%	0.0%
Aether Lens	1	6.3%	0.0%
Tiara of Selemene	1	6.3%	0.0%
Black King Bar	1	6.3%	0.0%
Mjollnir	1	6.3%	0.0%
Mask of Madness	1	6.3%	0.0%
Wraith Band	1	6.3%	0.0%
Splintmail	1	6.3%	0.0%
Enchanted Mango	1	6.3%	0.0%
Spirit Vessel	1	6.3%	0.0%
Broadsword	1	6.3%	0.0%
Iron Branch	1	6.3%	0.0%
Aeon Disk	1	6.3%	0.0%
Boots of Travel	1	6.3%	0.0%