Cheng Po-jen
baseball player

Cheng Po-jen (Chinese: 鄭博壬; pinyin: Zhèng Bórén; born 17 October 1982 in Taiwan) is a former Taiwanese baseball player who previously played for Uni-President Lions of Chinese Professional Baseball League (CPBL). After retiring, he became the pitching coach for the team.
Begin with the source’s own compact description: “Cheng Po-jen” is baseball player. The dossier treats that line as a proposition to test through Cheng, Po-jen and baseball, not as a finished interpretation.
Why this record matters
The phrase “baseball player” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Chronology provides the most reliable spine for this subject; interpretation should follow only after identities and dates are secure. The source revision retrieved here is dated Nov 6, 2025. The linked authority identifier is Q5091242. The first chronological checks are 1982.
Public reputation and documentary evidence do not always develop together; absence from a summary is not evidence of historical absence. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Read biographical claims against dates, named institutions and the cited references. Distinguish a subject’s later reputation from evidence produced during their lifetime.
- Establishing names and roles
- Building a first chronology
- Locating cited institutions
Personal papers, civil or court records, institutional files and the scholarship cited by the source.
Three-step research path
- Establish the record: confirm the title “Cheng Po-jen”, its source revision and the description used here.
- Expand the search: follow Cheng Po-jen primary sources, Cheng Po-jen archive and Cheng research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Cheng Po-jen”?
- Which claims depend on a single source or contested interpretation?
- Which primary records establish identity, chronology and institutional ties?
Search terms from this dossier
This entry incorporates text from “Cheng Po-jen” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.