SteelSeries first entry into the Rival line, the Rival 100 was quite the popular mouse and continues to have its place amongst Esports professionals. The sensor used is a SteelSeries original sensor, and performs quite well despite some small issues such as mouse spin out at fast speeds, as well as concerns regarding built in acceleration. The shell is very form fitting for medium sized hands, and the mouse can be used for any grip. SteelSeries drivers will also allow the user to customize DPI, polling rate and much more. The Rival 110 was released shortly after the 100, and sports a different Optical sensor. Despite the 110 having a newer sensor, some professional players have decided to stay with the 100 as they prefer it.

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Professional players currently using this mouse include: Pine (Overwatch), Krystal (CS:GO), weskeRR (Rainbow Six Siege).