|Full name||Kay Voser|
|Date of birth||4 January 1987|
|Place of birth||Baden, Switzerland|
|Height||1.66 m (5 ft 5 1⁄2 in)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 18:03, 3 July 2014 (UTC).
† Appearances (Goals).
On 31 May Voser transferred from Grasshopper-Club Zurich to Basel. He played his league debut for Basel on 16 July 2011 in the 1:1 away draw against BSC Young Boys. But after just six matches he suffered an injury that kept him out of training for the remainder of the season. At the end of the 2011–12 season he won the Double, the League Championship title and the Swiss Cup  with his new club.
At the end of the Swiss Super League season 2012–13 Voser won the Championship title for the second time and was Swiss Cup runner up with Basel. In the 2012–13 UEFA Europa League Basel advanced as far as the semi-finals, there being matched against the reigning UEFA Champions League holders Chelsea, but they were knocked out losing both matches 2-5 on aggregate.
Voser scored his first goal for Basel in the 2013–14 season on 23 November 2013 in the St. Jakob-Park. It was the second goal for Basel as they beat Thun 4-1. At the end of the 2013–14 Super League season Voser won his third league championship with Basel. They also reached the final of the 2013–14 Swiss Cup, but were beaten 2–0 by Zürich after extra time. During the 2013–14 Champions League season Basel reached the group stage and finished the group in third position. Thus they qualified for Europa League knockout phase and here they advanced as far as the quarter-finals.
Voser played his Swiss U-16 debut on 26 August 2002 in the 2–2 away draw against the German U-16 team. He made his Swiss U-21 debut on 7 February 2007 in the 4–0 away defeat against the French U-21 team.
Titles and honours
- Swiss Super League champion (3): 2011–12, 2012–13, 2013–14
- Swiss Cup winner (1): 2011–12
- Swiss Cup runner up (2): 2012–13, 2013–14
- Uhrencup winner (2): 2011, 2013
- FC Basel 1893 (2011). "FCB verpflichtet Verteidiger Kay Voser" (in German). FC Basel 1893. Retrieved 2011-05-31.
- Mesiter, Remo (2011). "Ein Unentschieden zum Auftakt" (in German). FC Basel 1893. Retrieved 2011-07-16.
- "Jetzt hat Basel den Titel auf sicher" (in German). football.ch. 2012. Retrieved 2012-04-29.
- "Matchtelegram FC Basel 1893 5:3 FC Luzern" (in German). football.ch. 2012. Retrieved 2012-05-16.
- Schifferle, Michael (2013). "Season review: Switzerland". Eufa. Retrieved 2013-06-10.
- SFV (2013). "Telegramm Schweizer Cup Final" (in German). Schweizerischer Fussballverband. Retrieved 2013-05-20.
- Haylett, Trevor (2013). "Basel take heart after Chelsea defeat". Eufa. Retrieved 2013-05-03.
- Marti, Caspar (2013). "Der FCB schlägt Thun nach einem frühen Rückstand letztlich souverän" (in German). FC Basel 1893. Retrieved 2013-11-23.
- Grossenbacher, Sacha (2014). "Fotos vom Spiel gegen Lausanne sowie den anschliessenden Feierlichkeiten" (in German). FC Basel 1893. Retrieved 2014-05-18.
- "Kay Voser: Fulham sign FC Basel defender for undisclosed fee". BBC Sport. 2 July 2014. Retrieved 3 July 2014.
- Key Voser Profile at FC Basel (German)
- Kay Voser on the website of the Swiss Football League
- Soccerway profile