1 Roger Federer in the second round of the 2006 Dubai Tennis Championships, though he lost in straight sets.

"[5] Al Ghareeb did not make a significant breakthrough at a top-level event, though in the 2007 Dubai Tennis Championships he won a set from Top 10 player Tomáš Berdych before losing 3–6, 6–3, 6–2.

[6] Al Ghareeb again received a wild-card to Dubai in 2008, losing 6–4, 6–0 in the first round to the fifth seed Nikolay Davydenko.

"[7] In 2007, he led the Kuwaiti team in its most successful Davis Cup season, reaching the Asia/Oceania Group II final with victories over Iran and Indonesia, before losing the division championship match to the Philippines in a 0–5 sweep.

[8] As of February 2018, Ghareeb had a 67–31 record in Davis Cup play for Kuwait (50-13 in singles), and was its longest-standing member.