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NBA draft 2020: Debating James Wiseman, Onyeka Okongwu and the best bigs

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The best plays from this year's NBA draft prospects (2:21)

From Obi Toppin to James Wiseman, check out the best highlights from this year's NBA draft prospects. (2:21)

At the start of the 2019-20 college basketball season, James Wiseman of Memphis was considered by many to be the clear top big man in this class, with a strong chance to go No. 1 overall. With the 2020 NBA draft nearing (Nov. 18 on ESPN), could USC's Onyeka Okongwu end up supplanting Wiseman at the NBA level?

Our experts Jonathan Givony, Mike Schmitz and Kevin Pelton rank their top five bigs in the 2020, break down the differences in their picks and select one key second-rounder to watch.