Sergio Llull added 10 for Spain, which improved to 2-0 and will face
Luka Doncic and Slovenia on Sunday for the top spot from Group C.
Rubio was the MVP when Spain beat Argentina 95-75 two years ago in China to win its second world championship - with the first coming in this very Saitama Super Arena in 2006.
The Spanish might have another run at an Olympic medal in them after
winning silvers in 2008 and 2012, and bronze in 2016.
Nicolas Laprovittola scored 27 points for Argentina, which fell to 0-2 after giving up 48 points to Doncic and lost 118-100 in its opener.
Luis Scola added 13 and Facundo Campazzo had 10.
After fall, Lillard, Adebayo try to help US get up again
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Can the Opals go for their first Olympic gold in Tokyo?
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