Suarez, making his 100th appearance for the national team, became the first Uruguayan to score in three different World Cups after a mistake by goalkeeper Mohammed Al-Owais following a corner in the 23rd minute. Uruguay can do themselves a massive favour by winning today and rendering their clash with Russian Federation a formality / decider as to who tops group A.
Bizarrely, two-time World Cup champions Uruguay have never beaten the "Green Falcons"; Saudi Arabia won a friendly in 2002 while a 2014 friendly ended in a draw.
Luis Suarez and Edinson Cavani will look to find their groove to seal Uruguay's third consecutive passage to the knockout rounds against first-round strugglers Saudi Arabia. Given Uruguay's superior talent level, manager Oscar Tabarez could opt to rotate his squad and prevent any key players from picking up any injuries.
Suarez made a bright start, looking to make amends for his poor performance in the opening 1-0 win against Egypt, firing a left-footed volley from Cristian Rodriguez's knockdown which was blocked by Ali Al-Bulayhi.
The Saudis continued to move the ball around but barely threatened the typically gritty Uruguay defence.
Al-Owais - winning only his second cap after replacing Abdullah Al-Muaiouf in goal - completely missed a floated Carlos Sanchez corner and Suarez tapped in his 52nd global goal unmarked at the back post.
After sneaking past Egypt in their World Cup opener with a stoppage-time victor, Uruguay will field a veteran side containing seven players aged 31 or over against Saudi Arabia as they seek a victory that would seal their place in the last 16.
Uruguay began the second period with greater objective, and Suarez came close to a second when Al-Owais palmed clear his low free-kick.