upsides
/ʌpˈsaɪdz/adverb
1- (especially in horse racing) alongside; on a level（尤指赛马） 持平; 平行：
the horse came upsides.
那马赶了上来。
1.1
upsides with
archaic even or equal with〈古〉平等地, 不相上下地。
词源
early 18th cent.: from UPSIDE in the sense 'upper part' + the adverbial suffix -s.